Home / 8,178.92-11,283.16-4,820.12

Finding the Fourth Proportional to 8,178.92, 11,283.16 and 4,820.12

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Solution

The fourth proportional to 8,178.92, 11,283.16 and 4,820.12 is: 6,649.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.92 : 11,283.16 = 4,820.12 : x
  2. Step 2: Convert to fraction form
    8,178.92/11,283.16 = 4,820.12/x
  3. Step 3: Cross multiply
    8,178.92x = 11,283.16 × 4,820.12
  4. Step 4: Simplify right side
    8,178.92x = 54,386,185.18
  5. Step 5: Solve for x
    x = 54,386,185.18/8,178.92
  6. Step 6: Final answer
    x = 6,649.56

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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.