Home / 3,173.72-4,380.90-2,386.40

Finding the Fourth Proportional to 3,173.72, 4,380.90 and 2,386.40

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Solution

The fourth proportional to 3,173.72, 4,380.90 and 2,386.40 is: 3,294.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,173.72 : 4,380.90 = 2,386.40 : x
  2. Step 2: Convert to fraction form
    3,173.72/4,380.90 = 2,386.40/x
  3. Step 3: Cross multiply
    3,173.72x = 4,380.90 × 2,386.40
  4. Step 4: Simplify right side
    3,173.72x = 10,454,579.76
  5. Step 5: Solve for x
    x = 10,454,579.76/3,173.72
  6. Step 6: Final answer
    x = 3,294.11

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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.