Home / 2,615.46-3,923.20-667.68

Finding the Fourth Proportional to 2,615.46, 3,923.20 and 667.68

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Solution

The fourth proportional to 2,615.46, 3,923.20 and 667.68 is: 1,001.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,615.46 : 3,923.20 = 667.68 : x
  2. Step 2: Convert to fraction form
    2,615.46/3,923.20 = 667.68/x
  3. Step 3: Cross multiply
    2,615.46x = 3,923.20 × 667.68
  4. Step 4: Simplify right side
    2,615.46x = 2,619,442.18
  5. Step 5: Solve for x
    x = 2,619,442.18/2,615.46
  6. Step 6: Final answer
    x = 1,001.52

Related Problems

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Half scale
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Double scale
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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.