Home / 8,387.52-11,577.20-6,720.56

Finding the Fourth Proportional to 8,387.52, 11,577.20 and 6,720.56

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Solution

The fourth proportional to 8,387.52, 11,577.20 and 6,720.56 is: 9,276.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,387.52 : 11,577.20 = 6,720.56 : x
  2. Step 2: Convert to fraction form
    8,387.52/11,577.20 = 6,720.56/x
  3. Step 3: Cross multiply
    8,387.52x = 11,577.20 × 6,720.56
  4. Step 4: Simplify right side
    8,387.52x = 77,805,267.23
  5. Step 5: Solve for x
    x = 77,805,267.23/8,387.52
  6. Step 6: Final answer
    x = 9,276.31

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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.