Home / 8,928.29-12,320.78-4,949.17

Finding the Fourth Proportional to 8,928.29, 12,320.78 and 4,949.17

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Solution

The fourth proportional to 8,928.29, 12,320.78 and 4,949.17 is: 6,829.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,928.29 : 12,320.78 = 4,949.17 : x
  2. Step 2: Convert to fraction form
    8,928.29/12,320.78 = 4,949.17/x
  3. Step 3: Cross multiply
    8,928.29x = 12,320.78 × 4,949.17
  4. Step 4: Simplify right side
    8,928.29x = 60,977,579.20
  5. Step 5: Solve for x
    x = 60,977,579.20/8,928.29
  6. Step 6: Final answer
    x = 6,829.70

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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.