Home / 5,262.85-7,887.42-2,139.21

Finding the Fourth Proportional to 5,262.85, 7,887.42 and 2,139.21

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Solution

The fourth proportional to 5,262.85, 7,887.42 and 2,139.21 is: 3,206.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,262.85 : 7,887.42 = 2,139.21 : x
  2. Step 2: Convert to fraction form
    5,262.85/7,887.42 = 2,139.21/x
  3. Step 3: Cross multiply
    5,262.85x = 7,887.42 × 2,139.21
  4. Step 4: Simplify right side
    5,262.85x = 16,872,808.45
  5. Step 5: Solve for x
    x = 16,872,808.45/5,262.85
  6. Step 6: Final answer
    x = 3,206.02

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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.