Home / 3,760.47-5,641.11-1,911.69

Finding the Fourth Proportional to 3,760.47, 5,641.11 and 1,911.69

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Solution

The fourth proportional to 3,760.47, 5,641.11 and 1,911.69 is: 2,867.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,760.47 : 5,641.11 = 1,911.69 : x
  2. Step 2: Convert to fraction form
    3,760.47/5,641.11 = 1,911.69/x
  3. Step 3: Cross multiply
    3,760.47x = 5,641.11 × 1,911.69
  4. Step 4: Simplify right side
    3,760.47x = 10,784,053.58
  5. Step 5: Solve for x
    x = 10,784,053.58/3,760.47
  6. Step 6: Final answer
    x = 2,867.74

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1.5x scale

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.