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Finding the Fourth Proportional to 2,720.95, 3,754.91 and 1,478.95

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Solution

The fourth proportional to 2,720.95, 3,754.91 and 1,478.95 is: 2,040.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.95 : 3,754.91 = 1,478.95 : x
  2. Step 2: Convert to fraction form
    2,720.95/3,754.91 = 1,478.95/x
  3. Step 3: Cross multiply
    2,720.95x = 3,754.91 × 1,478.95
  4. Step 4: Simplify right side
    2,720.95x = 5,553,324.14
  5. Step 5: Solve for x
    x = 5,553,324.14/2,720.95
  6. Step 6: Final answer
    x = 2,040.95

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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.