Home / 3,478.68-5,214.51-2,181.06

Finding the Fourth Proportional to 3,478.68, 5,214.51 and 2,181.06

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Solution

The fourth proportional to 3,478.68, 5,214.51 and 2,181.06 is: 3,269.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.68 : 5,214.51 = 2,181.06 : x
  2. Step 2: Convert to fraction form
    3,478.68/5,214.51 = 2,181.06/x
  3. Step 3: Cross multiply
    3,478.68x = 5,214.51 × 2,181.06
  4. Step 4: Simplify right side
    3,478.68x = 11,373,159.18
  5. Step 5: Solve for x
    x = 11,373,159.18/3,478.68
  6. Step 6: Final answer
    x = 3,269.39

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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.