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Finding the Fourth Proportional to 9,291.28, 12,807.12 and 7,298.68

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Solution

The fourth proportional to 9,291.28, 12,807.12 and 7,298.68 is: 10,060.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,291.28 : 12,807.12 = 7,298.68 : x
  2. Step 2: Convert to fraction form
    9,291.28/12,807.12 = 7,298.68/x
  3. Step 3: Cross multiply
    9,291.28x = 12,807.12 × 7,298.68
  4. Step 4: Simplify right side
    9,291.28x = 93,475,070.60
  5. Step 5: Solve for x
    x = 93,475,070.60/9,291.28
  6. Step 6: Final answer
    x = 10,060.52

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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.