Home / 2,312.15-3,190.77-1,264.23

Finding the Fourth Proportional to 2,312.15, 3,190.77 and 1,264.23

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Solution

The fourth proportional to 2,312.15, 3,190.77 and 1,264.23 is: 1,744.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,312.15 : 3,190.77 = 1,264.23 : x
  2. Step 2: Convert to fraction form
    2,312.15/3,190.77 = 1,264.23/x
  3. Step 3: Cross multiply
    2,312.15x = 3,190.77 × 1,264.23
  4. Step 4: Simplify right side
    2,312.15x = 4,033,867.16
  5. Step 5: Solve for x
    x = 4,033,867.16/2,312.15
  6. Step 6: Final answer
    x = 1,744.64

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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.