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Finding the Fourth Proportional to 8,430.52, 12,695.23 and 7,347.52

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Solution

The fourth proportional to 8,430.52, 12,695.23 and 7,347.52 is: 11,064.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,430.52 : 12,695.23 = 7,347.52 : x
  2. Step 2: Convert to fraction form
    8,430.52/12,695.23 = 7,347.52/x
  3. Step 3: Cross multiply
    8,430.52x = 12,695.23 × 7,347.52
  4. Step 4: Simplify right side
    8,430.52x = 93,278,456.33
  5. Step 5: Solve for x
    x = 93,278,456.33/8,430.52
  6. Step 6: Final answer
    x = 11,064.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.