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Finding the Fourth Proportional to 9,088.40, 12,732.40 and 9,088.40

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Solution

The fourth proportional to 9,088.40, 12,732.40 and 9,088.40 is: 12,732.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,088.40 : 12,732.40 = 9,088.40 : x
  2. Step 2: Convert to fraction form
    9,088.40/12,732.40 = 9,088.40/x
  3. Step 3: Cross multiply
    9,088.40x = 12,732.40 × 9,088.40
  4. Step 4: Simplify right side
    9,088.40x = 115,717,144.16
  5. Step 5: Solve for x
    x = 115,717,144.16/9,088.40
  6. Step 6: Final answer
    x = 12,732.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.