Home / 5,122.24-7,688.16-2,658.80

Finding the Fourth Proportional to 5,122.24, 7,688.16 and 2,658.80

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Solution

The fourth proportional to 5,122.24, 7,688.16 and 2,658.80 is: 3,990.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,122.24 : 7,688.16 = 2,658.80 : x
  2. Step 2: Convert to fraction form
    5,122.24/7,688.16 = 2,658.80/x
  3. Step 3: Cross multiply
    5,122.24x = 7,688.16 × 2,658.80
  4. Step 4: Simplify right side
    5,122.24x = 20,441,279.81
  5. Step 5: Solve for x
    x = 20,441,279.81/5,122.24
  6. Step 6: Final answer
    x = 3,990.69

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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.