Home / 5,439.60-8,159.40-5,111.55

Finding the Fourth Proportional to 5,439.60, 8,159.40 and 5,111.55

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Solution

The fourth proportional to 5,439.60, 8,159.40 and 5,111.55 is: 7,667.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,439.60 : 8,159.40 = 5,111.55 : x
  2. Step 2: Convert to fraction form
    5,439.60/8,159.40 = 5,111.55/x
  3. Step 3: Cross multiply
    5,439.60x = 8,159.40 × 5,111.55
  4. Step 4: Simplify right side
    5,439.60x = 41,707,181.07
  5. Step 5: Solve for x
    x = 41,707,181.07/5,439.60
  6. Step 6: Final answer
    x = 7,667.33

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.