Home / 8,919.49-12,305.73-5,331.96

Finding the Fourth Proportional to 8,919.49, 12,305.73 and 5,331.96

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Solution

The fourth proportional to 8,919.49, 12,305.73 and 5,331.96 is: 7,356.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,919.49 : 12,305.73 = 5,331.96 : x
  2. Step 2: Convert to fraction form
    8,919.49/12,305.73 = 5,331.96/x
  3. Step 3: Cross multiply
    8,919.49x = 12,305.73 × 5,331.96
  4. Step 4: Simplify right side
    8,919.49x = 65,613,598.60
  5. Step 5: Solve for x
    x = 65,613,598.60/8,919.49
  6. Step 6: Final answer
    x = 7,356.21

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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.