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Finding the Fourth Proportional to 6,879.87, 10,323.45 and 2,987.01

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Solution

The fourth proportional to 6,879.87, 10,323.45 and 2,987.01 is: 4,482.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,879.87 : 10,323.45 = 2,987.01 : x
  2. Step 2: Convert to fraction form
    6,879.87/10,323.45 = 2,987.01/x
  3. Step 3: Cross multiply
    6,879.87x = 10,323.45 × 2,987.01
  4. Step 4: Simplify right side
    6,879.87x = 30,836,248.38
  5. Step 5: Solve for x
    x = 30,836,248.38/6,879.87
  6. Step 6: Final answer
    x = 4,482.10

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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.