Home / 2,291.74-3,436.98-1,121.14

Finding the Fourth Proportional to 2,291.74, 3,436.98 and 1,121.14

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Solution

The fourth proportional to 2,291.74, 3,436.98 and 1,121.14 is: 1,681.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.74 : 3,436.98 = 1,121.14 : x
  2. Step 2: Convert to fraction form
    2,291.74/3,436.98 = 1,121.14/x
  3. Step 3: Cross multiply
    2,291.74x = 3,436.98 × 1,121.14
  4. Step 4: Simplify right side
    2,291.74x = 3,853,335.76
  5. Step 5: Solve for x
    x = 3,853,335.76/2,291.74
  6. Step 6: Final answer
    x = 1,681.40

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1.5x scale

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.