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Finding the Fourth Proportional to 2,720.84, 3,754.76 and 1,478.84

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Solution

The fourth proportional to 2,720.84, 3,754.76 and 1,478.84 is: 2,040.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.84 : 3,754.76 = 1,478.84 : x
  2. Step 2: Convert to fraction form
    2,720.84/3,754.76 = 1,478.84/x
  3. Step 3: Cross multiply
    2,720.84x = 3,754.76 × 1,478.84
  4. Step 4: Simplify right side
    2,720.84x = 5,552,663.11
  5. Step 5: Solve for x
    x = 5,552,663.11/2,720.84
  6. Step 6: Final answer
    x = 2,040.79

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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.