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Finding the Fourth Proportional to 8,729.28, 12,058.20 and 6,973.20

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Solution

The fourth proportional to 8,729.28, 12,058.20 and 6,973.20 is: 9,632.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,729.28 : 12,058.20 = 6,973.20 : x
  2. Step 2: Convert to fraction form
    8,729.28/12,058.20 = 6,973.20/x
  3. Step 3: Cross multiply
    8,729.28x = 12,058.20 × 6,973.20
  4. Step 4: Simplify right side
    8,729.28x = 84,084,240.24
  5. Step 5: Solve for x
    x = 84,084,240.24/8,729.28
  6. Step 6: Final answer
    x = 9,632.44

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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.