Home / 5,416.52-8,121.45-2,125.76

Finding the Fourth Proportional to 5,416.52, 8,121.45 and 2,125.76

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Solution

The fourth proportional to 5,416.52, 8,121.45 and 2,125.76 is: 3,187.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,416.52 : 8,121.45 = 2,125.76 : x
  2. Step 2: Convert to fraction form
    5,416.52/8,121.45 = 2,125.76/x
  3. Step 3: Cross multiply
    5,416.52x = 8,121.45 × 2,125.76
  4. Step 4: Simplify right side
    5,416.52x = 17,264,253.55
  5. Step 5: Solve for x
    x = 17,264,253.55/5,416.52
  6. Step 6: Final answer
    x = 3,187.33

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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.