Home / 8,178.47-11,286.29-4,642.82

Finding the Fourth Proportional to 8,178.47, 11,286.29 and 4,642.82

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Solution

The fourth proportional to 8,178.47, 11,286.29 and 4,642.82 is: 6,407.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.47 : 11,286.29 = 4,642.82 : x
  2. Step 2: Convert to fraction form
    8,178.47/11,286.29 = 4,642.82/x
  3. Step 3: Cross multiply
    8,178.47x = 11,286.29 × 4,642.82
  4. Step 4: Simplify right side
    8,178.47x = 52,400,184.32
  5. Step 5: Solve for x
    x = 52,400,184.32/8,178.47
  6. Step 6: Final answer
    x = 6,407.09

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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.