Home / 2,371.15-3,557.36-811.15

Finding the Fourth Proportional to 2,371.15, 3,557.36 and 811.15

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Solution

The fourth proportional to 2,371.15, 3,557.36 and 811.15 is: 1,216.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,371.15 : 3,557.36 = 811.15 : x
  2. Step 2: Convert to fraction form
    2,371.15/3,557.36 = 811.15/x
  3. Step 3: Cross multiply
    2,371.15x = 3,557.36 × 811.15
  4. Step 4: Simplify right side
    2,371.15x = 2,885,548.51
  5. Step 5: Solve for x
    x = 2,885,548.51/2,371.15
  6. Step 6: Final answer
    x = 1,216.94

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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.