Home / 7,972.65-11,006.15-4,990.14

Finding the Fourth Proportional to 7,972.65, 11,006.15 and 4,990.14

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Solution

The fourth proportional to 7,972.65, 11,006.15 and 4,990.14 is: 6,888.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,972.65 : 11,006.15 = 4,990.14 : x
  2. Step 2: Convert to fraction form
    7,972.65/11,006.15 = 4,990.14/x
  3. Step 3: Cross multiply
    7,972.65x = 11,006.15 × 4,990.14
  4. Step 4: Simplify right side
    7,972.65x = 54,922,204.41
  5. Step 5: Solve for x
    x = 54,922,204.41/7,972.65
  6. Step 6: Final answer
    x = 6,888.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.