Home / 1,381.24-2,071.76-503.71

Finding the Fourth Proportional to 1,381.24, 2,071.76 and 503.71

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Solution

The fourth proportional to 1,381.24, 2,071.76 and 503.71 is: 755.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381.24 : 2,071.76 = 503.71 : x
  2. Step 2: Convert to fraction form
    1,381.24/2,071.76 = 503.71/x
  3. Step 3: Cross multiply
    1,381.24x = 2,071.76 × 503.71
  4. Step 4: Simplify right side
    1,381.24x = 1,043,566.23
  5. Step 5: Solve for x
    x = 1,043,566.23/1,381.24
  6. Step 6: Final answer
    x = 755.53

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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.