Home / 5,142.87-7,714.30-1,247.27

Finding the Fourth Proportional to 5,142.87, 7,714.30 and 1,247.27

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Solution

The fourth proportional to 5,142.87, 7,714.30 and 1,247.27 is: 1,870.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,142.87 : 7,714.30 = 1,247.27 : x
  2. Step 2: Convert to fraction form
    5,142.87/7,714.30 = 1,247.27/x
  3. Step 3: Cross multiply
    5,142.87x = 7,714.30 × 1,247.27
  4. Step 4: Simplify right side
    5,142.87x = 9,621,842.45
  5. Step 5: Solve for x
    x = 9,621,842.45/5,142.87
  6. Step 6: Final answer
    x = 1,870.91

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Similar ratio
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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.