Home / 1,867.76-2,577.55-1,071.09

Finding the Fourth Proportional to 1,867.76, 2,577.55 and 1,071.09

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Solution

The fourth proportional to 1,867.76, 2,577.55 and 1,071.09 is: 1,478.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867.76 : 2,577.55 = 1,071.09 : x
  2. Step 2: Convert to fraction form
    1,867.76/2,577.55 = 1,071.09/x
  3. Step 3: Cross multiply
    1,867.76x = 2,577.55 × 1,071.09
  4. Step 4: Simplify right side
    1,867.76x = 2,760,773.68
  5. Step 5: Solve for x
    x = 2,760,773.68/1,867.76
  6. Step 6: Final answer
    x = 1,478.12

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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.