Home / 3,609.24-4,981.28-2,116.95

Finding the Fourth Proportional to 3,609.24, 4,981.28 and 2,116.95

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Solution

The fourth proportional to 3,609.24, 4,981.28 and 2,116.95 is: 2,921.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,609.24 : 4,981.28 = 2,116.95 : x
  2. Step 2: Convert to fraction form
    3,609.24/4,981.28 = 2,116.95/x
  3. Step 3: Cross multiply
    3,609.24x = 4,981.28 × 2,116.95
  4. Step 4: Simplify right side
    3,609.24x = 10,545,110.11
  5. Step 5: Solve for x
    x = 10,545,110.11/3,609.24
  6. Step 6: Final answer
    x = 2,921.70

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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.