Home / 1,355.64-2,033.40-1,138.80

Finding the Fourth Proportional to 1,355.64, 2,033.40 and 1,138.80

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Solution

The fourth proportional to 1,355.64, 2,033.40 and 1,138.80 is: 1,708.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355.64 : 2,033.40 = 1,138.80 : x
  2. Step 2: Convert to fraction form
    1,355.64/2,033.40 = 1,138.80/x
  3. Step 3: Cross multiply
    1,355.64x = 2,033.40 × 1,138.80
  4. Step 4: Simplify right side
    1,355.64x = 2,315,635.92
  5. Step 5: Solve for x
    x = 2,315,635.92/1,355.64
  6. Step 6: Final answer
    x = 1,708.15

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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.