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Finding the Fourth Proportional to 8,995.99, 12,416.07 and 5,641.70

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Solution

The fourth proportional to 8,995.99, 12,416.07 and 5,641.70 is: 7,786.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,995.99 : 12,416.07 = 5,641.70 : x
  2. Step 2: Convert to fraction form
    8,995.99/12,416.07 = 5,641.70/x
  3. Step 3: Cross multiply
    8,995.99x = 12,416.07 × 5,641.70
  4. Step 4: Simplify right side
    8,995.99x = 70,047,742.12
  5. Step 5: Solve for x
    x = 70,047,742.12/8,995.99
  6. Step 6: Final answer
    x = 7,786.55

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.