Home / 2,261.32-3,119.90-1,376.92

Finding the Fourth Proportional to 2,261.32, 3,119.90 and 1,376.92

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Solution

The fourth proportional to 2,261.32, 3,119.90 and 1,376.92 is: 1,899.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.32 : 3,119.90 = 1,376.92 : x
  2. Step 2: Convert to fraction form
    2,261.32/3,119.90 = 1,376.92/x
  3. Step 3: Cross multiply
    2,261.32x = 3,119.90 × 1,376.92
  4. Step 4: Simplify right side
    2,261.32x = 4,295,852.71
  5. Step 5: Solve for x
    x = 4,295,852.71/2,261.32
  6. Step 6: Final answer
    x = 1,899.71

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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.