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Finding the Fourth Proportional to 7,685.10, 11,527.65 and 7,004.70

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Solution

The fourth proportional to 7,685.10, 11,527.65 and 7,004.70 is: 10,507.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,685.10 : 11,527.65 = 7,004.70 : x
  2. Step 2: Convert to fraction form
    7,685.10/11,527.65 = 7,004.70/x
  3. Step 3: Cross multiply
    7,685.10x = 11,527.65 × 7,004.70
  4. Step 4: Simplify right side
    7,685.10x = 80,747,729.96
  5. Step 5: Solve for x
    x = 80,747,729.96/7,685.10
  6. Step 6: Final answer
    x = 10,507.05

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.