Home / 1,839.17-2,539.13-1,131.30

Finding the Fourth Proportional to 1,839.17, 2,539.13 and 1,131.30

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Solution

The fourth proportional to 1,839.17, 2,539.13 and 1,131.30 is: 1,561.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,839.17 : 2,539.13 = 1,131.30 : x
  2. Step 2: Convert to fraction form
    1,839.17/2,539.13 = 1,131.30/x
  3. Step 3: Cross multiply
    1,839.17x = 2,539.13 × 1,131.30
  4. Step 4: Simplify right side
    1,839.17x = 2,872,512.11
  5. Step 5: Solve for x
    x = 2,872,512.11/1,839.17
  6. Step 6: Final answer
    x = 1,561.85

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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.