Home / 1,647.27-2,270.16-1,331.64

Finding the Fourth Proportional to 1,647.27, 2,270.16 and 1,331.64

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Solution

The fourth proportional to 1,647.27, 2,270.16 and 1,331.64 is: 1,835.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647.27 : 2,270.16 = 1,331.64 : x
  2. Step 2: Convert to fraction form
    1,647.27/2,270.16 = 1,331.64/x
  3. Step 3: Cross multiply
    1,647.27x = 2,270.16 × 1,331.64
  4. Step 4: Simplify right side
    1,647.27x = 3,023,035.86
  5. Step 5: Solve for x
    x = 3,023,035.86/1,647.27
  6. Step 6: Final answer
    x = 1,835.18

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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.