Home / 7,320.90-10,982.16-2,390.70

Finding the Fourth Proportional to 7,320.90, 10,982.16 and 2,390.70

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Solution

The fourth proportional to 7,320.90, 10,982.16 and 2,390.70 is: 3,586.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,320.90 : 10,982.16 = 2,390.70 : x
  2. Step 2: Convert to fraction form
    7,320.90/10,982.16 = 2,390.70/x
  3. Step 3: Cross multiply
    7,320.90x = 10,982.16 × 2,390.70
  4. Step 4: Simplify right side
    7,320.90x = 26,255,049.91
  5. Step 5: Solve for x
    x = 26,255,049.91/7,320.90
  6. Step 6: Final answer
    x = 3,586.31

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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.