Home / 7,180.89-10,770.48-1,916.29

Finding the Fourth Proportional to 7,180.89, 10,770.48 and 1,916.29

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Solution

The fourth proportional to 7,180.89, 10,770.48 and 1,916.29 is: 2,874.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,180.89 : 10,770.48 = 1,916.29 : x
  2. Step 2: Convert to fraction form
    7,180.89/10,770.48 = 1,916.29/x
  3. Step 3: Cross multiply
    7,180.89x = 10,770.48 × 1,916.29
  4. Step 4: Simplify right side
    7,180.89x = 20,639,363.12
  5. Step 5: Solve for x
    x = 20,639,363.12/7,180.89
  6. Step 6: Final answer
    x = 2,874.21

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1.5x scale

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.