Home / 2,312.14-3,190.81-1,264.28

Finding the Fourth Proportional to 2,312.14, 3,190.81 and 1,264.28

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Solution

The fourth proportional to 2,312.14, 3,190.81 and 1,264.28 is: 1,744.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,312.14 : 3,190.81 = 1,264.28 : x
  2. Step 2: Convert to fraction form
    2,312.14/3,190.81 = 1,264.28/x
  3. Step 3: Cross multiply
    2,312.14x = 3,190.81 × 1,264.28
  4. Step 4: Simplify right side
    2,312.14x = 4,034,077.27
  5. Step 5: Solve for x
    x = 4,034,077.27/2,312.14
  6. Step 6: Final answer
    x = 1,744.74

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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.