Home / 8,640.78-11,924.25-4,863.95

Finding the Fourth Proportional to 8,640.78, 11,924.25 and 4,863.95

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Solution

The fourth proportional to 8,640.78, 11,924.25 and 4,863.95 is: 6,712.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,640.78 : 11,924.25 = 4,863.95 : x
  2. Step 2: Convert to fraction form
    8,640.78/11,924.25 = 4,863.95/x
  3. Step 3: Cross multiply
    8,640.78x = 11,924.25 × 4,863.95
  4. Step 4: Simplify right side
    8,640.78x = 57,998,955.79
  5. Step 5: Solve for x
    x = 57,998,955.79/8,640.78
  6. Step 6: Final answer
    x = 6,712.24

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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.