Home / 1,840.40-2,539.18-1,131.50

Finding the Fourth Proportional to 1,840.40, 2,539.18 and 1,131.50

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Solution

The fourth proportional to 1,840.40, 2,539.18 and 1,131.50 is: 1,561.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,840.40 : 2,539.18 = 1,131.50 : x
  2. Step 2: Convert to fraction form
    1,840.40/2,539.18 = 1,131.50/x
  3. Step 3: Cross multiply
    1,840.40x = 2,539.18 × 1,131.50
  4. Step 4: Simplify right side
    1,840.40x = 2,873,082.17
  5. Step 5: Solve for x
    x = 2,873,082.17/1,840.40
  6. Step 6: Final answer
    x = 1,561.12

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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.