Home / 2,312.22-3,190.80-1,264.22

Finding the Fourth Proportional to 2,312.22, 3,190.80 and 1,264.22

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Solution

The fourth proportional to 2,312.22, 3,190.80 and 1,264.22 is: 1,744.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,312.22 : 3,190.80 = 1,264.22 : x
  2. Step 2: Convert to fraction form
    2,312.22/3,190.80 = 1,264.22/x
  3. Step 3: Cross multiply
    2,312.22x = 3,190.80 × 1,264.22
  4. Step 4: Simplify right side
    2,312.22x = 4,033,873.93
  5. Step 5: Solve for x
    x = 4,033,873.93/2,312.22
  6. Step 6: Final answer
    x = 1,744.59

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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.