Home / 8,175.47-11,278.64-6,399.95

Finding the Fourth Proportional to 8,175.47, 11,278.64 and 6,399.95

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Solution

The fourth proportional to 8,175.47, 11,278.64 and 6,399.95 is: 8,829.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,175.47 : 11,278.64 = 6,399.95 : x
  2. Step 2: Convert to fraction form
    8,175.47/11,278.64 = 6,399.95/x
  3. Step 3: Cross multiply
    8,175.47x = 11,278.64 × 6,399.95
  4. Step 4: Simplify right side
    8,175.47x = 72,182,643.68
  5. Step 5: Solve for x
    x = 72,182,643.68/8,175.47
  6. Step 6: Final answer
    x = 8,829.18

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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.