Home / 5,151.20-7,109.64-3,056.48

Finding the Fourth Proportional to 5,151.20, 7,109.64 and 3,056.48

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Solution

The fourth proportional to 5,151.20, 7,109.64 and 3,056.48 is: 4,218.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,151.20 : 7,109.64 = 3,056.48 : x
  2. Step 2: Convert to fraction form
    5,151.20/7,109.64 = 3,056.48/x
  3. Step 3: Cross multiply
    5,151.20x = 7,109.64 × 3,056.48
  4. Step 4: Simplify right side
    5,151.20x = 21,730,472.47
  5. Step 5: Solve for x
    x = 21,730,472.47/5,151.20
  6. Step 6: Final answer
    x = 4,218.53

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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.