Home / 1,840.08-2,540.11-1,280.34

Finding the Fourth Proportional to 1,840.08, 2,540.11 and 1,280.34

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Solution

The fourth proportional to 1,840.08, 2,540.11 and 1,280.34 is: 1,767.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,840.08 : 2,540.11 = 1,280.34 : x
  2. Step 2: Convert to fraction form
    1,840.08/2,540.11 = 1,280.34/x
  3. Step 3: Cross multiply
    1,840.08x = 2,540.11 × 1,280.34
  4. Step 4: Simplify right side
    1,840.08x = 3,252,214.35
  5. Step 5: Solve for x
    x = 3,252,214.35/1,840.08
  6. Step 6: Final answer
    x = 1,767.43

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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.