Home / 5,161.67-7,123.13-2,803.79

Finding the Fourth Proportional to 5,161.67, 7,123.13 and 2,803.79

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Solution

The fourth proportional to 5,161.67, 7,123.13 and 2,803.79 is: 3,869.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,161.67 : 7,123.13 = 2,803.79 : x
  2. Step 2: Convert to fraction form
    5,161.67/7,123.13 = 2,803.79/x
  3. Step 3: Cross multiply
    5,161.67x = 7,123.13 × 2,803.79
  4. Step 4: Simplify right side
    5,161.67x = 19,971,774.97
  5. Step 5: Solve for x
    x = 19,971,774.97/5,161.67
  6. Step 6: Final answer
    x = 3,869.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.