Home / 5,456.60-8,168.70-5,136.20

Finding the Fourth Proportional to 5,456.60, 8,168.70 and 5,136.20

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Solution

The fourth proportional to 5,456.60, 8,168.70 and 5,136.20 is: 7,689.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,456.60 : 8,168.70 = 5,136.20 : x
  2. Step 2: Convert to fraction form
    5,456.60/8,168.70 = 5,136.20/x
  3. Step 3: Cross multiply
    5,456.60x = 8,168.70 × 5,136.20
  4. Step 4: Simplify right side
    5,456.60x = 41,956,076.94
  5. Step 5: Solve for x
    x = 41,956,076.94/5,456.60
  6. Step 6: Final answer
    x = 7,689.05

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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.