Home / 4,890.72-7,336.08-2,115.12

Finding the Fourth Proportional to 4,890.72, 7,336.08 and 2,115.12

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Solution

The fourth proportional to 4,890.72, 7,336.08 and 2,115.12 is: 3,172.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,890.72 : 7,336.08 = 2,115.12 : x
  2. Step 2: Convert to fraction form
    4,890.72/7,336.08 = 2,115.12/x
  3. Step 3: Cross multiply
    4,890.72x = 7,336.08 × 2,115.12
  4. Step 4: Simplify right side
    4,890.72x = 15,516,689.53
  5. Step 5: Solve for x
    x = 15,516,689.53/4,890.72
  6. Step 6: Final answer
    x = 3,172.68

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Similar ratio
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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.