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Finding the Fourth Proportional to 9,370.20, 12,932.52 and 7,128.48

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Solution

The fourth proportional to 9,370.20, 12,932.52 and 7,128.48 is: 9,838.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,370.20 : 12,932.52 = 7,128.48 : x
  2. Step 2: Convert to fraction form
    9,370.20/12,932.52 = 7,128.48/x
  3. Step 3: Cross multiply
    9,370.20x = 12,932.52 × 7,128.48
  4. Step 4: Simplify right side
    9,370.20x = 92,189,210.17
  5. Step 5: Solve for x
    x = 92,189,210.17/9,370.20
  6. Step 6: Final answer
    x = 9,838.55

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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.