Home / 5,278.35-7,916.93-1,329.61

Finding the Fourth Proportional to 5,278.35, 7,916.93 and 1,329.61

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Solution

The fourth proportional to 5,278.35, 7,916.93 and 1,329.61 is: 1,994.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.35 : 7,916.93 = 1,329.61 : x
  2. Step 2: Convert to fraction form
    5,278.35/7,916.93 = 1,329.61/x
  3. Step 3: Cross multiply
    5,278.35x = 7,916.93 × 1,329.61
  4. Step 4: Simplify right side
    5,278.35x = 10,526,404.16
  5. Step 5: Solve for x
    x = 10,526,404.16/5,278.35
  6. Step 6: Final answer
    x = 1,994.26

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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.