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Finding the Fourth Proportional to 9,050.28, 12,489 and 5,070.72

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Solution

The fourth proportional to 9,050.28, 12,489 and 5,070.72 is: 6,997.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,050.28 : 12,489 = 5,070.72 : x
  2. Step 2: Convert to fraction form
    9,050.28/12,489 = 5,070.72/x
  3. Step 3: Cross multiply
    9,050.28x = 12,489 × 5,070.72
  4. Step 4: Simplify right side
    9,050.28x = 63,328,222.08
  5. Step 5: Solve for x
    x = 63,328,222.08/9,050.28
  6. Step 6: Final answer
    x = 6,997.38

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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.