Home / 1,487.54-2,231.58-1,245.76

Finding the Fourth Proportional to 1,487.54, 2,231.58 and 1,245.76

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Solution

The fourth proportional to 1,487.54, 2,231.58 and 1,245.76 is: 1,868.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.54 : 2,231.58 = 1,245.76 : x
  2. Step 2: Convert to fraction form
    1,487.54/2,231.58 = 1,245.76/x
  3. Step 3: Cross multiply
    1,487.54x = 2,231.58 × 1,245.76
  4. Step 4: Simplify right side
    1,487.54x = 2,780,013.10
  5. Step 5: Solve for x
    x = 2,780,013.10/1,487.54
  6. Step 6: Final answer
    x = 1,868.87

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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.