Home / 5,154.05-7,111.85-2,915.61

Finding the Fourth Proportional to 5,154.05, 7,111.85 and 2,915.61

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Solution

The fourth proportional to 5,154.05, 7,111.85 and 2,915.61 is: 4,023.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,154.05 : 7,111.85 = 2,915.61 : x
  2. Step 2: Convert to fraction form
    5,154.05/7,111.85 = 2,915.61/x
  3. Step 3: Cross multiply
    5,154.05x = 7,111.85 × 2,915.61
  4. Step 4: Simplify right side
    5,154.05x = 20,735,366.40
  5. Step 5: Solve for x
    x = 20,735,366.40/5,154.05
  6. Step 6: Final answer
    x = 4,023.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.