Home / 8,987.20-12,402.46-5,008.18

Finding the Fourth Proportional to 8,987.20, 12,402.46 and 5,008.18

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Solution

The fourth proportional to 8,987.20, 12,402.46 and 5,008.18 is: 6,911.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,987.20 : 12,402.46 = 5,008.18 : x
  2. Step 2: Convert to fraction form
    8,987.20/12,402.46 = 5,008.18/x
  3. Step 3: Cross multiply
    8,987.20x = 12,402.46 × 5,008.18
  4. Step 4: Simplify right side
    8,987.20x = 62,113,708.60
  5. Step 5: Solve for x
    x = 62,113,708.60/8,987.20
  6. Step 6: Final answer
    x = 6,911.35

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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.