Home / 8,767.60-12,099.36-4,991.06

Finding the Fourth Proportional to 8,767.60, 12,099.36 and 4,991.06

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Solution

The fourth proportional to 8,767.60, 12,099.36 and 4,991.06 is: 6,887.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,767.60 : 12,099.36 = 4,991.06 : x
  2. Step 2: Convert to fraction form
    8,767.60/12,099.36 = 4,991.06/x
  3. Step 3: Cross multiply
    8,767.60x = 12,099.36 × 4,991.06
  4. Step 4: Simplify right side
    8,767.60x = 60,388,631.72
  5. Step 5: Solve for x
    x = 60,388,631.72/8,767.60
  6. Step 6: Final answer
    x = 6,887.70

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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.