Home / 8,218.20-11,341.20-7,590.35

Finding the Fourth Proportional to 8,218.20, 11,341.20 and 7,590.35

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Solution

The fourth proportional to 8,218.20, 11,341.20 and 7,590.35 is: 10,474.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,218.20 : 11,341.20 = 7,590.35 : x
  2. Step 2: Convert to fraction form
    8,218.20/11,341.20 = 7,590.35/x
  3. Step 3: Cross multiply
    8,218.20x = 11,341.20 × 7,590.35
  4. Step 4: Simplify right side
    8,218.20x = 86,083,639.47
  5. Step 5: Solve for x
    x = 86,083,639.47/8,218.20
  6. Step 6: Final answer
    x = 10,474.76

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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.