Home / 8,767.77-12,099.60-4,990.75

Finding the Fourth Proportional to 8,767.77, 12,099.60 and 4,990.75

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Solution

The fourth proportional to 8,767.77, 12,099.60 and 4,990.75 is: 6,887.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,767.77 : 12,099.60 = 4,990.75 : x
  2. Step 2: Convert to fraction form
    8,767.77/12,099.60 = 4,990.75/x
  3. Step 3: Cross multiply
    8,767.77x = 12,099.60 × 4,990.75
  4. Step 4: Simplify right side
    8,767.77x = 60,386,078.70
  5. Step 5: Solve for x
    x = 60,386,078.70/8,767.77
  6. Step 6: Final answer
    x = 6,887.28

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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.