Home / 5,118.56-7,062.36-2,880

Finding the Fourth Proportional to 5,118.56, 7,062.36 and 2,880

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Solution

The fourth proportional to 5,118.56, 7,062.36 and 2,880 is: 3,973.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.56 : 7,062.36 = 2,880 : x
  2. Step 2: Convert to fraction form
    5,118.56/7,062.36 = 2,880/x
  3. Step 3: Cross multiply
    5,118.56x = 7,062.36 × 2,880
  4. Step 4: Simplify right side
    5,118.56x = 20,339,596.80
  5. Step 5: Solve for x
    x = 20,339,596.80/5,118.56
  6. Step 6: Final answer
    x = 3,973.70

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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.