Home / 3,172.08-4,377.22-1,774.56

Finding the Fourth Proportional to 3,172.08, 4,377.22 and 1,774.56

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Solution

The fourth proportional to 3,172.08, 4,377.22 and 1,774.56 is: 2,448.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.08 : 4,377.22 = 1,774.56 : x
  2. Step 2: Convert to fraction form
    3,172.08/4,377.22 = 1,774.56/x
  3. Step 3: Cross multiply
    3,172.08x = 4,377.22 × 1,774.56
  4. Step 4: Simplify right side
    3,172.08x = 7,767,639.52
  5. Step 5: Solve for x
    x = 7,767,639.52/3,172.08
  6. Step 6: Final answer
    x = 2,448.75

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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.