Home / 5,122.55-7,069.28-2,884.47

Finding the Fourth Proportional to 5,122.55, 7,069.28 and 2,884.47

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Solution

The fourth proportional to 5,122.55, 7,069.28 and 2,884.47 is: 3,980.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,122.55 : 7,069.28 = 2,884.47 : x
  2. Step 2: Convert to fraction form
    5,122.55/7,069.28 = 2,884.47/x
  3. Step 3: Cross multiply
    5,122.55x = 7,069.28 × 2,884.47
  4. Step 4: Simplify right side
    5,122.55x = 20,391,126.08
  5. Step 5: Solve for x
    x = 20,391,126.08/5,122.55
  6. Step 6: Final answer
    x = 3,980.66

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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.