Home / 2,600.12-3,899.07-750.80

Finding the Fourth Proportional to 2,600.12, 3,899.07 and 750.80

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Solution

The fourth proportional to 2,600.12, 3,899.07 and 750.80 is: 1,125.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,600.12 : 3,899.07 = 750.80 : x
  2. Step 2: Convert to fraction form
    2,600.12/3,899.07 = 750.80/x
  3. Step 3: Cross multiply
    2,600.12x = 3,899.07 × 750.80
  4. Step 4: Simplify right side
    2,600.12x = 2,927,431.50
  5. Step 5: Solve for x
    x = 2,927,431.50/2,600.12
  6. Step 6: Final answer
    x = 1,125.88

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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.