Home / 2,371.78-3,272.81-1,376.86

Finding the Fourth Proportional to 2,371.78, 3,272.81 and 1,376.86

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Solution

The fourth proportional to 2,371.78, 3,272.81 and 1,376.86 is: 1,899.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,371.78 : 3,272.81 = 1,376.86 : x
  2. Step 2: Convert to fraction form
    2,371.78/3,272.81 = 1,376.86/x
  3. Step 3: Cross multiply
    2,371.78x = 3,272.81 × 1,376.86
  4. Step 4: Simplify right side
    2,371.78x = 4,506,213.77
  5. Step 5: Solve for x
    x = 4,506,213.77/2,371.78
  6. Step 6: Final answer
    x = 1,899.93

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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.