Home / 7,149.28-9,866.69-4,124.55

Finding the Fourth Proportional to 7,149.28, 9,866.69 and 4,124.55

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Solution

The fourth proportional to 7,149.28, 9,866.69 and 4,124.55 is: 5,692.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,149.28 : 9,866.69 = 4,124.55 : x
  2. Step 2: Convert to fraction form
    7,149.28/9,866.69 = 4,124.55/x
  3. Step 3: Cross multiply
    7,149.28x = 9,866.69 × 4,124.55
  4. Step 4: Simplify right side
    7,149.28x = 40,695,656.24
  5. Step 5: Solve for x
    x = 40,695,656.24/7,149.28
  6. Step 6: Final answer
    x = 5,692.27

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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.