Home / 8,521.04-12,781.60-2,974.36

Finding the Fourth Proportional to 8,521.04, 12,781.60 and 2,974.36

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Solution

The fourth proportional to 8,521.04, 12,781.60 and 2,974.36 is: 4,461.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,521.04 : 12,781.60 = 2,974.36 : x
  2. Step 2: Convert to fraction form
    8,521.04/12,781.60 = 2,974.36/x
  3. Step 3: Cross multiply
    8,521.04x = 12,781.60 × 2,974.36
  4. Step 4: Simplify right side
    8,521.04x = 38,017,079.78
  5. Step 5: Solve for x
    x = 38,017,079.78/8,521.04
  6. Step 6: Final answer
    x = 4,461.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.