Home / 1,301.67-1,942.99-1,129.55

Finding the Fourth Proportional to 1,301.67, 1,942.99 and 1,129.55

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Solution

The fourth proportional to 1,301.67, 1,942.99 and 1,129.55 is: 1,686.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,301.67 : 1,942.99 = 1,129.55 : x
  2. Step 2: Convert to fraction form
    1,301.67/1,942.99 = 1,129.55/x
  3. Step 3: Cross multiply
    1,301.67x = 1,942.99 × 1,129.55
  4. Step 4: Simplify right side
    1,301.67x = 2,194,691.82
  5. Step 5: Solve for x
    x = 2,194,691.82/1,301.67
  6. Step 6: Final answer
    x = 1,686.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.