Home / 1,142.42-1,712.55-1,037.66

Finding the Fourth Proportional to 1,142.42, 1,712.55 and 1,037.66

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Solution

The fourth proportional to 1,142.42, 1,712.55 and 1,037.66 is: 1,555.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,142.42 : 1,712.55 = 1,037.66 : x
  2. Step 2: Convert to fraction form
    1,142.42/1,712.55 = 1,037.66/x
  3. Step 3: Cross multiply
    1,142.42x = 1,712.55 × 1,037.66
  4. Step 4: Simplify right side
    1,142.42x = 1,777,044.63
  5. Step 5: Solve for x
    x = 1,777,044.63/1,142.42
  6. Step 6: Final answer
    x = 1,555.51

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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.