Home / 3,616.20-4,990.39-2,124.13

Finding the Fourth Proportional to 3,616.20, 4,990.39 and 2,124.13

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Solution

The fourth proportional to 3,616.20, 4,990.39 and 2,124.13 is: 2,931.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,616.20 : 4,990.39 = 2,124.13 : x
  2. Step 2: Convert to fraction form
    3,616.20/4,990.39 = 2,124.13/x
  3. Step 3: Cross multiply
    3,616.20x = 4,990.39 × 2,124.13
  4. Step 4: Simplify right side
    3,616.20x = 10,600,237.11
  5. Step 5: Solve for x
    x = 10,600,237.11/3,616.20
  6. Step 6: Final answer
    x = 2,931.32

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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.