Home / 5,148.12-7,103.88-3,158.76

Finding the Fourth Proportional to 5,148.12, 7,103.88 and 3,158.76

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Solution

The fourth proportional to 5,148.12, 7,103.88 and 3,158.76 is: 4,358.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,148.12 : 7,103.88 = 3,158.76 : x
  2. Step 2: Convert to fraction form
    5,148.12/7,103.88 = 3,158.76/x
  3. Step 3: Cross multiply
    5,148.12x = 7,103.88 × 3,158.76
  4. Step 4: Simplify right side
    5,148.12x = 22,439,451.99
  5. Step 5: Solve for x
    x = 22,439,451.99/5,148.12
  6. Step 6: Final answer
    x = 4,358.77

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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.