Home / 1,439.36-2,160.20-746.23

Finding the Fourth Proportional to 1,439.36, 2,160.20 and 746.23

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Solution

The fourth proportional to 1,439.36, 2,160.20 and 746.23 is: 1,119.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.36 : 2,160.20 = 746.23 : x
  2. Step 2: Convert to fraction form
    1,439.36/2,160.20 = 746.23/x
  3. Step 3: Cross multiply
    1,439.36x = 2,160.20 × 746.23
  4. Step 4: Simplify right side
    1,439.36x = 1,612,003.41
  5. Step 5: Solve for x
    x = 1,612,003.41/1,439.36
  6. Step 6: Final answer
    x = 1,119.94

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1.5x scale

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.