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Finding the Fourth Proportional to 9,009.40, 13,514.10 and 5,712.70

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Solution

The fourth proportional to 9,009.40, 13,514.10 and 5,712.70 is: 8,569.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,009.40 : 13,514.10 = 5,712.70 : x
  2. Step 2: Convert to fraction form
    9,009.40/13,514.10 = 5,712.70/x
  3. Step 3: Cross multiply
    9,009.40x = 13,514.10 × 5,712.70
  4. Step 4: Simplify right side
    9,009.40x = 77,201,999.07
  5. Step 5: Solve for x
    x = 77,201,999.07/9,009.40
  6. Step 6: Final answer
    x = 8,569.05

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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.