Home / 5,151.52-7,109.12-2,913.60

Finding the Fourth Proportional to 5,151.52, 7,109.12 and 2,913.60

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Solution

The fourth proportional to 5,151.52, 7,109.12 and 2,913.60 is: 4,020.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,151.52 : 7,109.12 = 2,913.60 : x
  2. Step 2: Convert to fraction form
    5,151.52/7,109.12 = 2,913.60/x
  3. Step 3: Cross multiply
    5,151.52x = 7,109.12 × 2,913.60
  4. Step 4: Simplify right side
    5,151.52x = 20,713,132.03
  5. Step 5: Solve for x
    x = 20,713,132.03/5,151.52
  6. Step 6: Final answer
    x = 4,020.78

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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.