Home / 1,555.24-2,147.14-966.10

Finding the Fourth Proportional to 1,555.24, 2,147.14 and 966.10

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Solution

The fourth proportional to 1,555.24, 2,147.14 and 966.10 is: 1,333.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.24 : 2,147.14 = 966.10 : x
  2. Step 2: Convert to fraction form
    1,555.24/2,147.14 = 966.10/x
  3. Step 3: Cross multiply
    1,555.24x = 2,147.14 × 966.10
  4. Step 4: Simplify right side
    1,555.24x = 2,074,351.95
  5. Step 5: Solve for x
    x = 2,074,351.95/1,555.24
  6. Step 6: Final answer
    x = 1,333.78

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.