Home / 1,587.60-2,381.27-491.94

Finding the Fourth Proportional to 1,587.60, 2,381.27 and 491.94

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Solution

The fourth proportional to 1,587.60, 2,381.27 and 491.94 is: 737.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587.60 : 2,381.27 = 491.94 : x
  2. Step 2: Convert to fraction form
    1,587.60/2,381.27 = 491.94/x
  3. Step 3: Cross multiply
    1,587.60x = 2,381.27 × 491.94
  4. Step 4: Simplify right side
    1,587.60x = 1,171,439.50
  5. Step 5: Solve for x
    x = 1,171,439.50/1,587.60
  6. Step 6: Final answer
    x = 737.87

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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.