Home / 5,138.15-7,700.84-2,671.52

Finding the Fourth Proportional to 5,138.15, 7,700.84 and 2,671.52

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Solution

The fourth proportional to 5,138.15, 7,700.84 and 2,671.52 is: 4,003.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.15 : 7,700.84 = 2,671.52 : x
  2. Step 2: Convert to fraction form
    5,138.15/7,700.84 = 2,671.52/x
  3. Step 3: Cross multiply
    5,138.15x = 7,700.84 × 2,671.52
  4. Step 4: Simplify right side
    5,138.15x = 20,572,934.72
  5. Step 5: Solve for x
    x = 20,572,934.72/5,138.15
  6. Step 6: Final answer
    x = 4,003.96

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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.