Home / 5,136.20-7,685.10-4,675.40

Finding the Fourth Proportional to 5,136.20, 7,685.10 and 4,675.40

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Solution

The fourth proportional to 5,136.20, 7,685.10 and 4,675.40 is: 6,995.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.20 : 7,685.10 = 4,675.40 : x
  2. Step 2: Convert to fraction form
    5,136.20/7,685.10 = 4,675.40/x
  3. Step 3: Cross multiply
    5,136.20x = 7,685.10 × 4,675.40
  4. Step 4: Simplify right side
    5,136.20x = 35,930,916.54
  5. Step 5: Solve for x
    x = 35,930,916.54/5,136.20
  6. Step 6: Final answer
    x = 6,995.62

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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.