Home / 5,118.68-7,062.18-2,880.20

Finding the Fourth Proportional to 5,118.68, 7,062.18 and 2,880.20

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Solution

The fourth proportional to 5,118.68, 7,062.18 and 2,880.20 is: 3,973.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.68 : 7,062.18 = 2,880.20 : x
  2. Step 2: Convert to fraction form
    5,118.68/7,062.18 = 2,880.20/x
  3. Step 3: Cross multiply
    5,118.68x = 7,062.18 × 2,880.20
  4. Step 4: Simplify right side
    5,118.68x = 20,340,490.84
  5. Step 5: Solve for x
    x = 20,340,490.84/5,118.68
  6. Step 6: Final answer
    x = 3,973.78

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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.