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Finding the Fourth Proportional to 9,165.72, 13,750.07 and 2,839.12

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Solution

The fourth proportional to 9,165.72, 13,750.07 and 2,839.12 is: 4,259.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,165.72 : 13,750.07 = 2,839.12 : x
  2. Step 2: Convert to fraction form
    9,165.72/13,750.07 = 2,839.12/x
  3. Step 3: Cross multiply
    9,165.72x = 13,750.07 × 2,839.12
  4. Step 4: Simplify right side
    9,165.72x = 39,038,151.47
  5. Step 5: Solve for x
    x = 39,038,151.47/9,165.72
  6. Step 6: Final answer
    x = 4,259.15

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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.