Home / 3,478.03-5,211.18-1,720.69

Finding the Fourth Proportional to 3,478.03, 5,211.18 and 1,720.69

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Solution

The fourth proportional to 3,478.03, 5,211.18 and 1,720.69 is: 2,578.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.03 : 5,211.18 = 1,720.69 : x
  2. Step 2: Convert to fraction form
    3,478.03/5,211.18 = 1,720.69/x
  3. Step 3: Cross multiply
    3,478.03x = 5,211.18 × 1,720.69
  4. Step 4: Simplify right side
    3,478.03x = 8,966,825.31
  5. Step 5: Solve for x
    x = 8,966,825.31/3,478.03
  6. Step 6: Final answer
    x = 2,578.13

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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.