Home / 3,612.40-4,987.56-2,906.80

Finding the Fourth Proportional to 3,612.40, 4,987.56 and 2,906.80

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Solution

The fourth proportional to 3,612.40, 4,987.56 and 2,906.80 is: 4,013.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.40 : 4,987.56 = 2,906.80 : x
  2. Step 2: Convert to fraction form
    3,612.40/4,987.56 = 2,906.80/x
  3. Step 3: Cross multiply
    3,612.40x = 4,987.56 × 2,906.80
  4. Step 4: Simplify right side
    3,612.40x = 14,497,839.41
  5. Step 5: Solve for x
    x = 14,497,839.41/3,612.40
  6. Step 6: Final answer
    x = 4,013.35

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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.