Home / 5,301.18-7,315.68-2,911.20

Finding the Fourth Proportional to 5,301.18, 7,315.68 and 2,911.20

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Solution

The fourth proportional to 5,301.18, 7,315.68 and 2,911.20 is: 4,017.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,301.18 : 7,315.68 = 2,911.20 : x
  2. Step 2: Convert to fraction form
    5,301.18/7,315.68 = 2,911.20/x
  3. Step 3: Cross multiply
    5,301.18x = 7,315.68 × 2,911.20
  4. Step 4: Simplify right side
    5,301.18x = 21,297,407.62
  5. Step 5: Solve for x
    x = 21,297,407.62/5,301.18
  6. Step 6: Final answer
    x = 4,017.48

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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.