Home / 3,178.90-4,377.81-2,293.30

Finding the Fourth Proportional to 3,178.90, 4,377.81 and 2,293.30

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Solution

The fourth proportional to 3,178.90, 4,377.81 and 2,293.30 is: 3,158.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.90 : 4,377.81 = 2,293.30 : x
  2. Step 2: Convert to fraction form
    3,178.90/4,377.81 = 2,293.30/x
  3. Step 3: Cross multiply
    3,178.90x = 4,377.81 × 2,293.30
  4. Step 4: Simplify right side
    3,178.90x = 10,039,631.67
  5. Step 5: Solve for x
    x = 10,039,631.67/3,178.90
  6. Step 6: Final answer
    x = 3,158.21

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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.