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Finding the Fourth Proportional to 6,888.65, 10,327.17 and 2,990.12

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Solution

The fourth proportional to 6,888.65, 10,327.17 and 2,990.12 is: 4,482.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,888.65 : 10,327.17 = 2,990.12 : x
  2. Step 2: Convert to fraction form
    6,888.65/10,327.17 = 2,990.12/x
  3. Step 3: Cross multiply
    6,888.65x = 10,327.17 × 2,990.12
  4. Step 4: Simplify right side
    6,888.65x = 30,879,477.56
  5. Step 5: Solve for x
    x = 30,879,477.56/6,888.65
  6. Step 6: Final answer
    x = 4,482.66

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1.5x scale

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.