Home / 2,312.14-3,190.80-1,264.30

Finding the Fourth Proportional to 2,312.14, 3,190.80 and 1,264.30

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Solution

The fourth proportional to 2,312.14, 3,190.80 and 1,264.30 is: 1,744.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,312.14 : 3,190.80 = 1,264.30 : x
  2. Step 2: Convert to fraction form
    2,312.14/3,190.80 = 1,264.30/x
  3. Step 3: Cross multiply
    2,312.14x = 3,190.80 × 1,264.30
  4. Step 4: Simplify right side
    2,312.14x = 4,034,128.44
  5. Step 5: Solve for x
    x = 4,034,128.44/2,312.14
  6. Step 6: Final answer
    x = 1,744.76

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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.