Home / 5,143.26-7,714.89-1,247.66

Finding the Fourth Proportional to 5,143.26, 7,714.89 and 1,247.66

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Solution

The fourth proportional to 5,143.26, 7,714.89 and 1,247.66 is: 1,871.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.26 : 7,714.89 = 1,247.66 : x
  2. Step 2: Convert to fraction form
    5,143.26/7,714.89 = 1,247.66/x
  3. Step 3: Cross multiply
    5,143.26x = 7,714.89 × 1,247.66
  4. Step 4: Simplify right side
    5,143.26x = 9,625,559.66
  5. Step 5: Solve for x
    x = 9,625,559.66/5,143.26
  6. Step 6: Final answer
    x = 1,871.49

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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.