Home / 1,444.40-1,993.38-1,089.70

Finding the Fourth Proportional to 1,444.40, 1,993.38 and 1,089.70

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Solution

The fourth proportional to 1,444.40, 1,993.38 and 1,089.70 is: 1,503.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,444.40 : 1,993.38 = 1,089.70 : x
  2. Step 2: Convert to fraction form
    1,444.40/1,993.38 = 1,089.70/x
  3. Step 3: Cross multiply
    1,444.40x = 1,993.38 × 1,089.70
  4. Step 4: Simplify right side
    1,444.40x = 2,172,184.59
  5. Step 5: Solve for x
    x = 2,172,184.59/1,444.40
  6. Step 6: Final answer
    x = 1,503.86

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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.