Home / 2,669.85-3,685.61-1,903.79

Finding the Fourth Proportional to 2,669.85, 3,685.61 and 1,903.79

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Solution

The fourth proportional to 2,669.85, 3,685.61 and 1,903.79 is: 2,628.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,669.85 : 3,685.61 = 1,903.79 : x
  2. Step 2: Convert to fraction form
    2,669.85/3,685.61 = 1,903.79/x
  3. Step 3: Cross multiply
    2,669.85x = 3,685.61 × 1,903.79
  4. Step 4: Simplify right side
    2,669.85x = 7,016,641.44
  5. Step 5: Solve for x
    x = 7,016,641.44/2,669.85
  6. Step 6: Final answer
    x = 2,628.10

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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.