Home / 1,436.16-2,154.73-742.47

Finding the Fourth Proportional to 1,436.16, 2,154.73 and 742.47

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Solution

The fourth proportional to 1,436.16, 2,154.73 and 742.47 is: 1,113.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,436.16 : 2,154.73 = 742.47 : x
  2. Step 2: Convert to fraction form
    1,436.16/2,154.73 = 742.47/x
  3. Step 3: Cross multiply
    1,436.16x = 2,154.73 × 742.47
  4. Step 4: Simplify right side
    1,436.16x = 1,599,811.75
  5. Step 5: Solve for x
    x = 1,599,811.75/1,436.16
  6. Step 6: Final answer
    x = 1,113.95

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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.