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Finding the Fourth Proportional to 9,785.70, 14,678.55 and 9,359.10

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Solution

The fourth proportional to 9,785.70, 14,678.55 and 9,359.10 is: 14,038.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,785.70 : 14,678.55 = 9,359.10 : x
  2. Step 2: Convert to fraction form
    9,785.70/14,678.55 = 9,359.10/x
  3. Step 3: Cross multiply
    9,785.70x = 14,678.55 × 9,359.10
  4. Step 4: Simplify right side
    9,785.70x = 137,378,017.31
  5. Step 5: Solve for x
    x = 137,378,017.31/9,785.70
  6. Step 6: Final answer
    x = 14,038.65

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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.