Home / 2,269.87-3,132.76-1,386.19

Finding the Fourth Proportional to 2,269.87, 3,132.76 and 1,386.19

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Solution

The fourth proportional to 2,269.87, 3,132.76 and 1,386.19 is: 1,913.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,269.87 : 3,132.76 = 1,386.19 : x
  2. Step 2: Convert to fraction form
    2,269.87/3,132.76 = 1,386.19/x
  3. Step 3: Cross multiply
    2,269.87x = 3,132.76 × 1,386.19
  4. Step 4: Simplify right side
    2,269.87x = 4,342,600.58
  5. Step 5: Solve for x
    x = 4,342,600.58/2,269.87
  6. Step 6: Final answer
    x = 1,913.15

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Half scale
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Double scale
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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.