Home / 8,241.66-11,387.88-6,487.20

Finding the Fourth Proportional to 8,241.66, 11,387.88 and 6,487.20

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Solution

The fourth proportional to 8,241.66, 11,387.88 and 6,487.20 is: 8,963.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,241.66 : 11,387.88 = 6,487.20 : x
  2. Step 2: Convert to fraction form
    8,241.66/11,387.88 = 6,487.20/x
  3. Step 3: Cross multiply
    8,241.66x = 11,387.88 × 6,487.20
  4. Step 4: Simplify right side
    8,241.66x = 73,875,455.14
  5. Step 5: Solve for x
    x = 73,875,455.14/8,241.66
  6. Step 6: Final answer
    x = 8,963.66

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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.