Home / 8,323.18-11,487.60-5,342.78

Finding the Fourth Proportional to 8,323.18, 11,487.60 and 5,342.78

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Solution

The fourth proportional to 8,323.18, 11,487.60 and 5,342.78 is: 7,374.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,323.18 : 11,487.60 = 5,342.78 : x
  2. Step 2: Convert to fraction form
    8,323.18/11,487.60 = 5,342.78/x
  3. Step 3: Cross multiply
    8,323.18x = 11,487.60 × 5,342.78
  4. Step 4: Simplify right side
    8,323.18x = 61,375,748.25
  5. Step 5: Solve for x
    x = 61,375,748.25/8,323.18
  6. Step 6: Final answer
    x = 7,374.08

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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.