Home / 2,269.76-3,132.63-1,386.05

Finding the Fourth Proportional to 2,269.76, 3,132.63 and 1,386.05

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Solution

The fourth proportional to 2,269.76, 3,132.63 and 1,386.05 is: 1,912.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,269.76 : 3,132.63 = 1,386.05 : x
  2. Step 2: Convert to fraction form
    2,269.76/3,132.63 = 1,386.05/x
  3. Step 3: Cross multiply
    2,269.76x = 3,132.63 × 1,386.05
  4. Step 4: Simplify right side
    2,269.76x = 4,341,966.15
  5. Step 5: Solve for x
    x = 4,341,966.15/2,269.76
  6. Step 6: Final answer
    x = 1,912.97

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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.