Home / 2,312.97-3,191.85-1,265.10

Finding the Fourth Proportional to 2,312.97, 3,191.85 and 1,265.10

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Solution

The fourth proportional to 2,312.97, 3,191.85 and 1,265.10 is: 1,745.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,312.97 : 3,191.85 = 1,265.10 : x
  2. Step 2: Convert to fraction form
    2,312.97/3,191.85 = 1,265.10/x
  3. Step 3: Cross multiply
    2,312.97x = 3,191.85 × 1,265.10
  4. Step 4: Simplify right side
    2,312.97x = 4,038,009.44
  5. Step 5: Solve for x
    x = 4,038,009.44/2,312.97
  6. Step 6: Final answer
    x = 1,745.81

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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.