Home / 5,151.60-7,109.15-2,913.44

Finding the Fourth Proportional to 5,151.60, 7,109.15 and 2,913.44

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Solution

The fourth proportional to 5,151.60, 7,109.15 and 2,913.44 is: 4,020.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,151.60 : 7,109.15 = 2,913.44 : x
  2. Step 2: Convert to fraction form
    5,151.60/7,109.15 = 2,913.44/x
  3. Step 3: Cross multiply
    5,151.60x = 7,109.15 × 2,913.44
  4. Step 4: Simplify right side
    5,151.60x = 20,712,031.86
  5. Step 5: Solve for x
    x = 20,712,031.86/5,151.60
  6. Step 6: Final answer
    x = 4,020.50

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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.