Home / 1,639.01-2,261.57-1,079.71

Finding the Fourth Proportional to 1,639.01, 2,261.57 and 1,079.71

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Solution

The fourth proportional to 1,639.01, 2,261.57 and 1,079.71 is: 1,489.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.01 : 2,261.57 = 1,079.71 : x
  2. Step 2: Convert to fraction form
    1,639.01/2,261.57 = 1,079.71/x
  3. Step 3: Cross multiply
    1,639.01x = 2,261.57 × 1,079.71
  4. Step 4: Simplify right side
    1,639.01x = 2,441,828.69
  5. Step 5: Solve for x
    x = 2,441,828.69/1,639.01
  6. Step 6: Final answer
    x = 1,489.82

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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.