Home / 5,270.40-7,901.76-2,803.20

Finding the Fourth Proportional to 5,270.40, 7,901.76 and 2,803.20

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Solution

The fourth proportional to 5,270.40, 7,901.76 and 2,803.20 is: 4,202.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,270.40 : 7,901.76 = 2,803.20 : x
  2. Step 2: Convert to fraction form
    5,270.40/7,901.76 = 2,803.20/x
  3. Step 3: Cross multiply
    5,270.40x = 7,901.76 × 2,803.20
  4. Step 4: Simplify right side
    5,270.40x = 22,150,213.63
  5. Step 5: Solve for x
    x = 22,150,213.63/5,270.40
  6. Step 6: Final answer
    x = 4,202.76

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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.