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Finding the Fourth Proportional to 2,927.88, 4,391.88 and 1,079.16

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Solution

The fourth proportional to 2,927.88, 4,391.88 and 1,079.16 is: 1,618.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,927.88 : 4,391.88 = 1,079.16 : x
  2. Step 2: Convert to fraction form
    2,927.88/4,391.88 = 1,079.16/x
  3. Step 3: Cross multiply
    2,927.88x = 4,391.88 × 1,079.16
  4. Step 4: Simplify right side
    2,927.88x = 4,739,541.22
  5. Step 5: Solve for x
    x = 4,739,541.22/2,927.88
  6. Step 6: Final answer
    x = 1,618.76

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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.