Home / 7,142.24-10,714.62-2,759.34

Finding the Fourth Proportional to 7,142.24, 10,714.62 and 2,759.34

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Solution

The fourth proportional to 7,142.24, 10,714.62 and 2,759.34 is: 4,139.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142.24 : 10,714.62 = 2,759.34 : x
  2. Step 2: Convert to fraction form
    7,142.24/10,714.62 = 2,759.34/x
  3. Step 3: Cross multiply
    7,142.24x = 10,714.62 × 2,759.34
  4. Step 4: Simplify right side
    7,142.24x = 29,565,279.55
  5. Step 5: Solve for x
    x = 29,565,279.55/7,142.24
  6. Step 6: Final answer
    x = 4,139.50

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Half scale
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Double scale
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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.