Home / 5,315.17-7,972.69-2,391.41

Finding the Fourth Proportional to 5,315.17, 7,972.69 and 2,391.41

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Solution

The fourth proportional to 5,315.17, 7,972.69 and 2,391.41 is: 3,587.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.17 : 7,972.69 = 2,391.41 : x
  2. Step 2: Convert to fraction form
    5,315.17/7,972.69 = 2,391.41/x
  3. Step 3: Cross multiply
    5,315.17x = 7,972.69 × 2,391.41
  4. Step 4: Simplify right side
    5,315.17x = 19,065,970.59
  5. Step 5: Solve for x
    x = 19,065,970.59/5,315.17
  6. Step 6: Final answer
    x = 3,587.09

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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.