Home / 1,840.19-2,760.48-865.76

Finding the Fourth Proportional to 1,840.19, 2,760.48 and 865.76

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Solution

The fourth proportional to 1,840.19, 2,760.48 and 865.76 is: 1,298.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,840.19 : 2,760.48 = 865.76 : x
  2. Step 2: Convert to fraction form
    1,840.19/2,760.48 = 865.76/x
  3. Step 3: Cross multiply
    1,840.19x = 2,760.48 × 865.76
  4. Step 4: Simplify right side
    1,840.19x = 2,389,899.36
  5. Step 5: Solve for x
    x = 2,389,899.36/1,840.19
  6. Step 6: Final answer
    x = 1,298.73

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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.