Home / 1,803.24-2,489.40-1,105.02

Finding the Fourth Proportional to 1,803.24, 2,489.40 and 1,105.02

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Solution

The fourth proportional to 1,803.24, 2,489.40 and 1,105.02 is: 1,525.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,803.24 : 2,489.40 = 1,105.02 : x
  2. Step 2: Convert to fraction form
    1,803.24/2,489.40 = 1,105.02/x
  3. Step 3: Cross multiply
    1,803.24x = 2,489.40 × 1,105.02
  4. Step 4: Simplify right side
    1,803.24x = 2,750,836.79
  5. Step 5: Solve for x
    x = 2,750,836.79/1,803.24
  6. Step 6: Final answer
    x = 1,525.50

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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.