Home / 5,143.17-7,714.66-1,680.42

Finding the Fourth Proportional to 5,143.17, 7,714.66 and 1,680.42

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Solution

The fourth proportional to 5,143.17, 7,714.66 and 1,680.42 is: 2,520.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.17 : 7,714.66 = 1,680.42 : x
  2. Step 2: Convert to fraction form
    5,143.17/7,714.66 = 1,680.42/x
  3. Step 3: Cross multiply
    5,143.17x = 7,714.66 × 1,680.42
  4. Step 4: Simplify right side
    5,143.17x = 12,963,868.96
  5. Step 5: Solve for x
    x = 12,963,868.96/5,143.17
  6. Step 6: Final answer
    x = 2,520.60

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1.5x scale

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.