Home / 2,136.30-3,200.85-1,038.30

Finding the Fourth Proportional to 2,136.30, 3,200.85 and 1,038.30

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Solution

The fourth proportional to 2,136.30, 3,200.85 and 1,038.30 is: 1,555.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,136.30 : 3,200.85 = 1,038.30 : x
  2. Step 2: Convert to fraction form
    2,136.30/3,200.85 = 1,038.30/x
  3. Step 3: Cross multiply
    2,136.30x = 3,200.85 × 1,038.30
  4. Step 4: Simplify right side
    2,136.30x = 3,323,442.56
  5. Step 5: Solve for x
    x = 3,323,442.56/2,136.30
  6. Step 6: Final answer
    x = 1,555.70

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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.