Home / 1,285.31-1,927.97-737.12

Finding the Fourth Proportional to 1,285.31, 1,927.97 and 737.12

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Solution

The fourth proportional to 1,285.31, 1,927.97 and 737.12 is: 1,105.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285.31 : 1,927.97 = 737.12 : x
  2. Step 2: Convert to fraction form
    1,285.31/1,927.97 = 737.12/x
  3. Step 3: Cross multiply
    1,285.31x = 1,927.97 × 737.12
  4. Step 4: Simplify right side
    1,285.31x = 1,421,149.14
  5. Step 5: Solve for x
    x = 1,421,149.14/1,285.31
  6. Step 6: Final answer
    x = 1,105.68

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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.