Home / 1,867.23-2,577.38-1,121.76

Finding the Fourth Proportional to 1,867.23, 2,577.38 and 1,121.76

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Solution

The fourth proportional to 1,867.23, 2,577.38 and 1,121.76 is: 1,548.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867.23 : 2,577.38 = 1,121.76 : x
  2. Step 2: Convert to fraction form
    1,867.23/2,577.38 = 1,121.76/x
  3. Step 3: Cross multiply
    1,867.23x = 2,577.38 × 1,121.76
  4. Step 4: Simplify right side
    1,867.23x = 2,891,196.18
  5. Step 5: Solve for x
    x = 2,891,196.18/1,867.23
  6. Step 6: Final answer
    x = 1,548.39

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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.