Home / 5,142.69-7,714.04-1,247.06

Finding the Fourth Proportional to 5,142.69, 7,714.04 and 1,247.06

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Solution

The fourth proportional to 5,142.69, 7,714.04 and 1,247.06 is: 1,870.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,142.69 : 7,714.04 = 1,247.06 : x
  2. Step 2: Convert to fraction form
    5,142.69/7,714.04 = 1,247.06/x
  3. Step 3: Cross multiply
    5,142.69x = 7,714.04 × 1,247.06
  4. Step 4: Simplify right side
    5,142.69x = 9,619,883.77
  5. Step 5: Solve for x
    x = 9,619,883.77/5,142.69
  6. Step 6: Final answer
    x = 1,870.59

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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.