Home / 5,315.27-7,970.28-1,983.38

Finding the Fourth Proportional to 5,315.27, 7,970.28 and 1,983.38

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Solution

The fourth proportional to 5,315.27, 7,970.28 and 1,983.38 is: 2,974.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.27 : 7,970.28 = 1,983.38 : x
  2. Step 2: Convert to fraction form
    5,315.27/7,970.28 = 1,983.38/x
  3. Step 3: Cross multiply
    5,315.27x = 7,970.28 × 1,983.38
  4. Step 4: Simplify right side
    5,315.27x = 15,808,093.95
  5. Step 5: Solve for x
    x = 15,808,093.95/5,315.27
  6. Step 6: Final answer
    x = 2,974.09

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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.