Home / 1,901.12-2,620.80-1,339.83

Finding the Fourth Proportional to 1,901.12, 2,620.80 and 1,339.83

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Solution

The fourth proportional to 1,901.12, 2,620.80 and 1,339.83 is: 1,847.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,901.12 : 2,620.80 = 1,339.83 : x
  2. Step 2: Convert to fraction form
    1,901.12/2,620.80 = 1,339.83/x
  3. Step 3: Cross multiply
    1,901.12x = 2,620.80 × 1,339.83
  4. Step 4: Simplify right side
    1,901.12x = 3,511,426.46
  5. Step 5: Solve for x
    x = 3,511,426.46/1,901.12
  6. Step 6: Final answer
    x = 1,847.04

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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.