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Finding the Fourth Proportional to 2,045.68, 3,068.76 and 747.28

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Solution

The fourth proportional to 2,045.68, 3,068.76 and 747.28 is: 1,121.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,045.68 : 3,068.76 = 747.28 : x
  2. Step 2: Convert to fraction form
    2,045.68/3,068.76 = 747.28/x
  3. Step 3: Cross multiply
    2,045.68x = 3,068.76 × 747.28
  4. Step 4: Simplify right side
    2,045.68x = 2,293,222.97
  5. Step 5: Solve for x
    x = 2,293,222.97/2,045.68
  6. Step 6: Final answer
    x = 1,121.01

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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.