Home / 5,309.78-7,328.51-3,517.28

Finding the Fourth Proportional to 5,309.78, 7,328.51 and 3,517.28

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Solution

The fourth proportional to 5,309.78, 7,328.51 and 3,517.28 is: 4,854.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,309.78 : 7,328.51 = 3,517.28 : x
  2. Step 2: Convert to fraction form
    5,309.78/7,328.51 = 3,517.28/x
  3. Step 3: Cross multiply
    5,309.78x = 7,328.51 × 3,517.28
  4. Step 4: Simplify right side
    5,309.78x = 25,776,421.65
  5. Step 5: Solve for x
    x = 25,776,421.65/5,309.78
  6. Step 6: Final answer
    x = 4,854.52

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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.