Home / 3,136.60-4,702.20-2,808.55

Finding the Fourth Proportional to 3,136.60, 4,702.20 and 2,808.55

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Solution

The fourth proportional to 3,136.60, 4,702.20 and 2,808.55 is: 4,210.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.60 : 4,702.20 = 2,808.55 : x
  2. Step 2: Convert to fraction form
    3,136.60/4,702.20 = 2,808.55/x
  3. Step 3: Cross multiply
    3,136.60x = 4,702.20 × 2,808.55
  4. Step 4: Simplify right side
    3,136.60x = 13,206,363.81
  5. Step 5: Solve for x
    x = 13,206,363.81/3,136.60
  6. Step 6: Final answer
    x = 4,210.41

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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.