Home / 8,761.31-12,090.58-5,617.49

Finding the Fourth Proportional to 8,761.31, 12,090.58 and 5,617.49

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Solution

The fourth proportional to 8,761.31, 12,090.58 and 5,617.49 is: 7,752.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,761.31 : 12,090.58 = 5,617.49 : x
  2. Step 2: Convert to fraction form
    8,761.31/12,090.58 = 5,617.49/x
  3. Step 3: Cross multiply
    8,761.31x = 12,090.58 × 5,617.49
  4. Step 4: Simplify right side
    8,761.31x = 67,918,712.24
  5. Step 5: Solve for x
    x = 67,918,712.24/8,761.31
  6. Step 6: Final answer
    x = 7,752.12

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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.