Home / 1,370.28-2,055.48-1,299.21

Finding the Fourth Proportional to 1,370.28, 2,055.48 and 1,299.21

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Solution

The fourth proportional to 1,370.28, 2,055.48 and 1,299.21 is: 1,948.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,370.28 : 2,055.48 = 1,299.21 : x
  2. Step 2: Convert to fraction form
    1,370.28/2,055.48 = 1,299.21/x
  3. Step 3: Cross multiply
    1,370.28x = 2,055.48 × 1,299.21
  4. Step 4: Simplify right side
    1,370.28x = 2,670,487.59
  5. Step 5: Solve for x
    x = 2,670,487.59/1,370.28
  6. Step 6: Final answer
    x = 1,948.86

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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.