Home / 8,115.57-11,199.80-4,578.91

Finding the Fourth Proportional to 8,115.57, 11,199.80 and 4,578.91

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Solution

The fourth proportional to 8,115.57, 11,199.80 and 4,578.91 is: 6,319.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.57 : 11,199.80 = 4,578.91 : x
  2. Step 2: Convert to fraction form
    8,115.57/11,199.80 = 4,578.91/x
  3. Step 3: Cross multiply
    8,115.57x = 11,199.80 × 4,578.91
  4. Step 4: Simplify right side
    8,115.57x = 51,282,859.67
  5. Step 5: Solve for x
    x = 51,282,859.67/8,115.57
  6. Step 6: Final answer
    x = 6,319.07

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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.