Home / 5,260.55-7,885.33-2,139.30

Finding the Fourth Proportional to 5,260.55, 7,885.33 and 2,139.30

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Solution

The fourth proportional to 5,260.55, 7,885.33 and 2,139.30 is: 3,206.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,260.55 : 7,885.33 = 2,139.30 : x
  2. Step 2: Convert to fraction form
    5,260.55/7,885.33 = 2,139.30/x
  3. Step 3: Cross multiply
    5,260.55x = 7,885.33 × 2,139.30
  4. Step 4: Simplify right side
    5,260.55x = 16,869,081.12
  5. Step 5: Solve for x
    x = 16,869,081.12/5,260.55
  6. Step 6: Final answer
    x = 3,206.72

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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.