Home / 7,147.40-10,721.18-2,988.04

Finding the Fourth Proportional to 7,147.40, 10,721.18 and 2,988.04

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Solution

The fourth proportional to 7,147.40, 10,721.18 and 2,988.04 is: 4,482.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,147.40 : 10,721.18 = 2,988.04 : x
  2. Step 2: Convert to fraction form
    7,147.40/10,721.18 = 2,988.04/x
  3. Step 3: Cross multiply
    7,147.40x = 10,721.18 × 2,988.04
  4. Step 4: Simplify right side
    7,147.40x = 32,035,314.69
  5. Step 5: Solve for x
    x = 32,035,314.69/7,147.40
  6. Step 6: Final answer
    x = 4,482.09

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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.