Home / 5,246.67-7,869.40-2,128.07

Finding the Fourth Proportional to 5,246.67, 7,869.40 and 2,128.07

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Solution

The fourth proportional to 5,246.67, 7,869.40 and 2,128.07 is: 3,191.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,246.67 : 7,869.40 = 2,128.07 : x
  2. Step 2: Convert to fraction form
    5,246.67/7,869.40 = 2,128.07/x
  3. Step 3: Cross multiply
    5,246.67x = 7,869.40 × 2,128.07
  4. Step 4: Simplify right side
    5,246.67x = 16,746,584.07
  5. Step 5: Solve for x
    x = 16,746,584.07/5,246.67
  6. Step 6: Final answer
    x = 3,191.85

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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.