Home / 2,790.72-4,186.07-1,325.43

Finding the Fourth Proportional to 2,790.72, 4,186.07 and 1,325.43

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Solution

The fourth proportional to 2,790.72, 4,186.07 and 1,325.43 is: 1,988.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.72 : 4,186.07 = 1,325.43 : x
  2. Step 2: Convert to fraction form
    2,790.72/4,186.07 = 1,325.43/x
  3. Step 3: Cross multiply
    2,790.72x = 4,186.07 × 1,325.43
  4. Step 4: Simplify right side
    2,790.72x = 5,548,332.86
  5. Step 5: Solve for x
    x = 5,548,332.86/2,790.72
  6. Step 6: Final answer
    x = 1,988.14

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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.