Home / 1,371.02-2,055.99-722.30

Finding the Fourth Proportional to 1,371.02, 2,055.99 and 722.30

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Solution

The fourth proportional to 1,371.02, 2,055.99 and 722.30 is: 1,083.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,371.02 : 2,055.99 = 722.30 : x
  2. Step 2: Convert to fraction form
    1,371.02/2,055.99 = 722.30/x
  3. Step 3: Cross multiply
    1,371.02x = 2,055.99 × 722.30
  4. Step 4: Simplify right side
    1,371.02x = 1,485,041.58
  5. Step 5: Solve for x
    x = 1,485,041.58/1,371.02
  6. Step 6: Final answer
    x = 1,083.17

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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.