Home / 3,381.28-5,071.97-916.35

Finding the Fourth Proportional to 3,381.28, 5,071.97 and 916.35

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Solution

The fourth proportional to 3,381.28, 5,071.97 and 916.35 is: 1,374.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,381.28 : 5,071.97 = 916.35 : x
  2. Step 2: Convert to fraction form
    3,381.28/5,071.97 = 916.35/x
  3. Step 3: Cross multiply
    3,381.28x = 5,071.97 × 916.35
  4. Step 4: Simplify right side
    3,381.28x = 4,647,699.71
  5. Step 5: Solve for x
    x = 4,647,699.71/3,381.28
  6. Step 6: Final answer
    x = 1,374.54

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1.5x scale

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.