Home / 5,122.29-7,685.84-2,655.77

Finding the Fourth Proportional to 5,122.29, 7,685.84 and 2,655.77

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Solution

The fourth proportional to 5,122.29, 7,685.84 and 2,655.77 is: 3,984.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,122.29 : 7,685.84 = 2,655.77 : x
  2. Step 2: Convert to fraction form
    5,122.29/7,685.84 = 2,655.77/x
  3. Step 3: Cross multiply
    5,122.29x = 7,685.84 × 2,655.77
  4. Step 4: Simplify right side
    5,122.29x = 20,411,823.30
  5. Step 5: Solve for x
    x = 20,411,823.30/5,122.29
  6. Step 6: Final answer
    x = 3,984.90

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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.