Home / 3,102.80-4,649.40-2,613.20

Finding the Fourth Proportional to 3,102.80, 4,649.40 and 2,613.20

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Solution

The fourth proportional to 3,102.80, 4,649.40 and 2,613.20 is: 3,915.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,102.80 : 4,649.40 = 2,613.20 : x
  2. Step 2: Convert to fraction form
    3,102.80/4,649.40 = 2,613.20/x
  3. Step 3: Cross multiply
    3,102.80x = 4,649.40 × 2,613.20
  4. Step 4: Simplify right side
    3,102.80x = 12,149,812.08
  5. Step 5: Solve for x
    x = 12,149,812.08/3,102.80
  6. Step 6: Final answer
    x = 3,915.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.