Home / 3,931.60-5,890.56-3,281.44

Finding the Fourth Proportional to 3,931.60, 5,890.56 and 3,281.44

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Solution

The fourth proportional to 3,931.60, 5,890.56 and 3,281.44 is: 4,916.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.60 : 5,890.56 = 3,281.44 : x
  2. Step 2: Convert to fraction form
    3,931.60/5,890.56 = 3,281.44/x
  3. Step 3: Cross multiply
    3,931.60x = 5,890.56 × 3,281.44
  4. Step 4: Simplify right side
    3,931.60x = 19,329,519.21
  5. Step 5: Solve for x
    x = 19,329,519.21/3,931.60
  6. Step 6: Final answer
    x = 4,916.45

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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.