Home / 7,479.43-10,320.82-4,122.04

Finding the Fourth Proportional to 7,479.43, 10,320.82 and 4,122.04

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Solution

The fourth proportional to 7,479.43, 10,320.82 and 4,122.04 is: 5,687.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,479.43 : 10,320.82 = 4,122.04 : x
  2. Step 2: Convert to fraction form
    7,479.43/10,320.82 = 4,122.04/x
  3. Step 3: Cross multiply
    7,479.43x = 10,320.82 × 4,122.04
  4. Step 4: Simplify right side
    7,479.43x = 42,542,816.12
  5. Step 5: Solve for x
    x = 42,542,816.12/7,479.43
  6. Step 6: Final answer
    x = 5,687.98

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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.