Home / 2,715.92-4,071.60-1,157.12

Finding the Fourth Proportional to 2,715.92, 4,071.60 and 1,157.12

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Solution

The fourth proportional to 2,715.92, 4,071.60 and 1,157.12 is: 1,734.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,715.92 : 4,071.60 = 1,157.12 : x
  2. Step 2: Convert to fraction form
    2,715.92/4,071.60 = 1,157.12/x
  3. Step 3: Cross multiply
    2,715.92x = 4,071.60 × 1,157.12
  4. Step 4: Simplify right side
    2,715.92x = 4,711,329.79
  5. Step 5: Solve for x
    x = 4,711,329.79/2,715.92
  6. Step 6: Final answer
    x = 1,734.71

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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.