Home / 8,320.85-12,447.09-7,590.95

Finding the Fourth Proportional to 8,320.85, 12,447.09 and 7,590.95

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Solution

The fourth proportional to 8,320.85, 12,447.09 and 7,590.95 is: 11,355.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.85 : 12,447.09 = 7,590.95 : x
  2. Step 2: Convert to fraction form
    8,320.85/12,447.09 = 7,590.95/x
  3. Step 3: Cross multiply
    8,320.85x = 12,447.09 × 7,590.95
  4. Step 4: Simplify right side
    8,320.85x = 94,485,175.60
  5. Step 5: Solve for x
    x = 94,485,175.60/8,320.85
  6. Step 6: Final answer
    x = 11,355.24

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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.