Home / 8,912.10-12,291.96-5,326.80

Finding the Fourth Proportional to 8,912.10, 12,291.96 and 5,326.80

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Solution

The fourth proportional to 8,912.10, 12,291.96 and 5,326.80 is: 7,346.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.10 : 12,291.96 = 5,326.80 : x
  2. Step 2: Convert to fraction form
    8,912.10/12,291.96 = 5,326.80/x
  3. Step 3: Cross multiply
    8,912.10x = 12,291.96 × 5,326.80
  4. Step 4: Simplify right side
    8,912.10x = 65,476,812.53
  5. Step 5: Solve for x
    x = 65,476,812.53/8,912.10
  6. Step 6: Final answer
    x = 7,346.96

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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.