Home / 3,172.04-4,377.42-1,774.78

Finding the Fourth Proportional to 3,172.04, 4,377.42 and 1,774.78

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Solution

The fourth proportional to 3,172.04, 4,377.42 and 1,774.78 is: 2,449.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.04 : 4,377.42 = 1,774.78 : x
  2. Step 2: Convert to fraction form
    3,172.04/4,377.42 = 1,774.78/x
  3. Step 3: Cross multiply
    3,172.04x = 4,377.42 × 1,774.78
  4. Step 4: Simplify right side
    3,172.04x = 7,768,957.47
  5. Step 5: Solve for x
    x = 7,768,957.47/3,172.04
  6. Step 6: Final answer
    x = 2,449.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.