Home / 8,422.48-11,622.90-4,887.70

Finding the Fourth Proportional to 8,422.48, 11,622.90 and 4,887.70

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Solution

The fourth proportional to 8,422.48, 11,622.90 and 4,887.70 is: 6,744.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,422.48 : 11,622.90 = 4,887.70 : x
  2. Step 2: Convert to fraction form
    8,422.48/11,622.90 = 4,887.70/x
  3. Step 3: Cross multiply
    8,422.48x = 11,622.90 × 4,887.70
  4. Step 4: Simplify right side
    8,422.48x = 56,809,248.33
  5. Step 5: Solve for x
    x = 56,809,248.33/8,422.48
  6. Step 6: Final answer
    x = 6,744.95

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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.