Home / 1,402.40-2,103.60-581.24

Finding the Fourth Proportional to 1,402.40, 2,103.60 and 581.24

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Solution

The fourth proportional to 1,402.40, 2,103.60 and 581.24 is: 871.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,402.40 : 2,103.60 = 581.24 : x
  2. Step 2: Convert to fraction form
    1,402.40/2,103.60 = 581.24/x
  3. Step 3: Cross multiply
    1,402.40x = 2,103.60 × 581.24
  4. Step 4: Simplify right side
    1,402.40x = 1,222,696.46
  5. Step 5: Solve for x
    x = 1,222,696.46/1,402.40
  6. Step 6: Final answer
    x = 871.86

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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.