Home / 5,424.20-8,136.30-1,726.40

Finding the Fourth Proportional to 5,424.20, 8,136.30 and 1,726.40

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Solution

The fourth proportional to 5,424.20, 8,136.30 and 1,726.40 is: 2,589.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,424.20 : 8,136.30 = 1,726.40 : x
  2. Step 2: Convert to fraction form
    5,424.20/8,136.30 = 1,726.40/x
  3. Step 3: Cross multiply
    5,424.20x = 8,136.30 × 1,726.40
  4. Step 4: Simplify right side
    5,424.20x = 14,046,508.32
  5. Step 5: Solve for x
    x = 14,046,508.32/5,424.20
  6. Step 6: Final answer
    x = 2,589.60

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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.