Home / 3,478.96-5,218.68-1,172.08

Finding the Fourth Proportional to 3,478.96, 5,218.68 and 1,172.08

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Solution

The fourth proportional to 3,478.96, 5,218.68 and 1,172.08 is: 1,758.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.96 : 5,218.68 = 1,172.08 : x
  2. Step 2: Convert to fraction form
    3,478.96/5,218.68 = 1,172.08/x
  3. Step 3: Cross multiply
    3,478.96x = 5,218.68 × 1,172.08
  4. Step 4: Simplify right side
    3,478.96x = 6,116,710.45
  5. Step 5: Solve for x
    x = 6,116,710.45/3,478.96
  6. Step 6: Final answer
    x = 1,758.20

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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.