Home / 2,790.81-4,184.19-1,403.15

Finding the Fourth Proportional to 2,790.81, 4,184.19 and 1,403.15

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Solution

The fourth proportional to 2,790.81, 4,184.19 and 1,403.15 is: 2,103.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.81 : 4,184.19 = 1,403.15 : x
  2. Step 2: Convert to fraction form
    2,790.81/4,184.19 = 1,403.15/x
  3. Step 3: Cross multiply
    2,790.81x = 4,184.19 × 1,403.15
  4. Step 4: Simplify right side
    2,790.81x = 5,871,025.28
  5. Step 5: Solve for x
    x = 5,871,025.28/2,790.81
  6. Step 6: Final answer
    x = 2,103.70

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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.