Home / 2,312.16-3,190.80-1,264.16

Finding the Fourth Proportional to 2,312.16, 3,190.80 and 1,264.16

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Solution

The fourth proportional to 2,312.16, 3,190.80 and 1,264.16 is: 1,744.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,312.16 : 3,190.80 = 1,264.16 : x
  2. Step 2: Convert to fraction form
    2,312.16/3,190.80 = 1,264.16/x
  3. Step 3: Cross multiply
    2,312.16x = 3,190.80 × 1,264.16
  4. Step 4: Simplify right side
    2,312.16x = 4,033,681.73
  5. Step 5: Solve for x
    x = 4,033,681.73/2,312.16
  6. Step 6: Final answer
    x = 1,744.55

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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.