Home / 5,719.40-8,562.90-5,136.20

Finding the Fourth Proportional to 5,719.40, 8,562.90 and 5,136.20

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Solution

The fourth proportional to 5,719.40, 8,562.90 and 5,136.20 is: 7,689.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,719.40 : 8,562.90 = 5,136.20 : x
  2. Step 2: Convert to fraction form
    5,719.40/8,562.90 = 5,136.20/x
  3. Step 3: Cross multiply
    5,719.40x = 8,562.90 × 5,136.20
  4. Step 4: Simplify right side
    5,719.40x = 43,980,766.98
  5. Step 5: Solve for x
    x = 43,980,766.98/5,719.40
  6. Step 6: Final answer
    x = 7,689.75

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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.