Home / 1,913.22-2,869.56-1,187.46

Finding the Fourth Proportional to 1,913.22, 2,869.56 and 1,187.46

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Solution

The fourth proportional to 1,913.22, 2,869.56 and 1,187.46 is: 1,781.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.22 : 2,869.56 = 1,187.46 : x
  2. Step 2: Convert to fraction form
    1,913.22/2,869.56 = 1,187.46/x
  3. Step 3: Cross multiply
    1,913.22x = 2,869.56 × 1,187.46
  4. Step 4: Simplify right side
    1,913.22x = 3,407,487.72
  5. Step 5: Solve for x
    x = 3,407,487.72/1,913.22
  6. Step 6: Final answer
    x = 1,781.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.