Home / 7,998.30-12,002.85-5,218.20

Finding the Fourth Proportional to 7,998.30, 12,002.85 and 5,218.20

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Solution

The fourth proportional to 7,998.30, 12,002.85 and 5,218.20 is: 7,830.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,998.30 : 12,002.85 = 5,218.20 : x
  2. Step 2: Convert to fraction form
    7,998.30/12,002.85 = 5,218.20/x
  3. Step 3: Cross multiply
    7,998.30x = 12,002.85 × 5,218.20
  4. Step 4: Simplify right side
    7,998.30x = 62,633,271.87
  5. Step 5: Solve for x
    x = 62,633,271.87/7,998.30
  6. Step 6: Final answer
    x = 7,830.82

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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.