Home / 1,981.65-2,734.18-1,130.95

Finding the Fourth Proportional to 1,981.65, 2,734.18 and 1,130.95

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Solution

The fourth proportional to 1,981.65, 2,734.18 and 1,130.95 is: 1,560.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981.65 : 2,734.18 = 1,130.95 : x
  2. Step 2: Convert to fraction form
    1,981.65/2,734.18 = 1,130.95/x
  3. Step 3: Cross multiply
    1,981.65x = 2,734.18 × 1,130.95
  4. Step 4: Simplify right side
    1,981.65x = 3,092,220.87
  5. Step 5: Solve for x
    x = 3,092,220.87/1,981.65
  6. Step 6: Final answer
    x = 1,560.43

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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.