Home / 1,867.85-2,577.40-1,121.94

Finding the Fourth Proportional to 1,867.85, 2,577.40 and 1,121.94

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Solution

The fourth proportional to 1,867.85, 2,577.40 and 1,121.94 is: 1,548.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867.85 : 2,577.40 = 1,121.94 : x
  2. Step 2: Convert to fraction form
    1,867.85/2,577.40 = 1,121.94/x
  3. Step 3: Cross multiply
    1,867.85x = 2,577.40 × 1,121.94
  4. Step 4: Simplify right side
    1,867.85x = 2,891,695.02
  5. Step 5: Solve for x
    x = 2,891,695.02/1,867.85
  6. Step 6: Final answer
    x = 1,548.14

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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.