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Finding the Fourth Proportional to 2,833.80, 4,251.16 and 986.01

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Solution

The fourth proportional to 2,833.80, 4,251.16 and 986.01 is: 1,479.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,833.80 : 4,251.16 = 986.01 : x
  2. Step 2: Convert to fraction form
    2,833.80/4,251.16 = 986.01/x
  3. Step 3: Cross multiply
    2,833.80x = 4,251.16 × 986.01
  4. Step 4: Simplify right side
    2,833.80x = 4,191,686.27
  5. Step 5: Solve for x
    x = 4,191,686.27/2,833.80
  6. Step 6: Final answer
    x = 1,479.18

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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.