Home / 2,312.21-3,190.86-1,264.26

Finding the Fourth Proportional to 2,312.21, 3,190.86 and 1,264.26

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Solution

The fourth proportional to 2,312.21, 3,190.86 and 1,264.26 is: 1,744.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,312.21 : 3,190.86 = 1,264.26 : x
  2. Step 2: Convert to fraction form
    2,312.21/3,190.86 = 1,264.26/x
  3. Step 3: Cross multiply
    2,312.21x = 3,190.86 × 1,264.26
  4. Step 4: Simplify right side
    2,312.21x = 4,034,076.66
  5. Step 5: Solve for x
    x = 4,034,076.66/2,312.21
  6. Step 6: Final answer
    x = 1,744.69

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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.