Home / 1,373.20-2,059.80-935.80

Finding the Fourth Proportional to 1,373.20, 2,059.80 and 935.80

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Solution

The fourth proportional to 1,373.20, 2,059.80 and 935.80 is: 1,403.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,373.20 : 2,059.80 = 935.80 : x
  2. Step 2: Convert to fraction form
    1,373.20/2,059.80 = 935.80/x
  3. Step 3: Cross multiply
    1,373.20x = 2,059.80 × 935.80
  4. Step 4: Simplify right side
    1,373.20x = 1,927,560.84
  5. Step 5: Solve for x
    x = 1,927,560.84/1,373.20
  6. Step 6: Final answer
    x = 1,403.70

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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.