Home / 1,438.29-2,155.41-1,264.59

Finding the Fourth Proportional to 1,438.29, 2,155.41 and 1,264.59

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Solution

The fourth proportional to 1,438.29, 2,155.41 and 1,264.59 is: 1,895.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438.29 : 2,155.41 = 1,264.59 : x
  2. Step 2: Convert to fraction form
    1,438.29/2,155.41 = 1,264.59/x
  3. Step 3: Cross multiply
    1,438.29x = 2,155.41 × 1,264.59
  4. Step 4: Simplify right side
    1,438.29x = 2,725,709.93
  5. Step 5: Solve for x
    x = 2,725,709.93/1,438.29
  6. Step 6: Final answer
    x = 1,895.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.