Home / 8,422.28-11,622.78-4,887.58

Finding the Fourth Proportional to 8,422.28, 11,622.78 and 4,887.58

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Solution

The fourth proportional to 8,422.28, 11,622.78 and 4,887.58 is: 6,744.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,422.28 : 11,622.78 = 4,887.58 : x
  2. Step 2: Convert to fraction form
    8,422.28/11,622.78 = 4,887.58/x
  3. Step 3: Cross multiply
    8,422.28x = 11,622.78 × 4,887.58
  4. Step 4: Simplify right side
    8,422.28x = 56,807,267.07
  5. Step 5: Solve for x
    x = 56,807,267.07/8,422.28
  6. Step 6: Final answer
    x = 6,744.88

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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.