Home / 5,161.56-7,122.98-2,803.70

Finding the Fourth Proportional to 5,161.56, 7,122.98 and 2,803.70

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Solution

The fourth proportional to 5,161.56, 7,122.98 and 2,803.70 is: 3,869.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,161.56 : 7,122.98 = 2,803.70 : x
  2. Step 2: Convert to fraction form
    5,161.56/7,122.98 = 2,803.70/x
  3. Step 3: Cross multiply
    5,161.56x = 7,122.98 × 2,803.70
  4. Step 4: Simplify right side
    5,161.56x = 19,970,663.41
  5. Step 5: Solve for x
    x = 19,970,663.41/5,161.56
  6. Step 6: Final answer
    x = 3,869.12

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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.