Home / 5,111.91-7,666.35-2,189.53

Finding the Fourth Proportional to 5,111.91, 7,666.35 and 2,189.53

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Solution

The fourth proportional to 5,111.91, 7,666.35 and 2,189.53 is: 3,283.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,111.91 : 7,666.35 = 2,189.53 : x
  2. Step 2: Convert to fraction form
    5,111.91/7,666.35 = 2,189.53/x
  3. Step 3: Cross multiply
    5,111.91x = 7,666.35 × 2,189.53
  4. Step 4: Simplify right side
    5,111.91x = 16,785,704.69
  5. Step 5: Solve for x
    x = 16,785,704.69/5,111.91
  6. Step 6: Final answer
    x = 3,283.65

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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.