Home / 1,643.31-2,457.48-1,227.13

Finding the Fourth Proportional to 1,643.31, 2,457.48 and 1,227.13

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Solution

The fourth proportional to 1,643.31, 2,457.48 and 1,227.13 is: 1,835.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,643.31 : 2,457.48 = 1,227.13 : x
  2. Step 2: Convert to fraction form
    1,643.31/2,457.48 = 1,227.13/x
  3. Step 3: Cross multiply
    1,643.31x = 2,457.48 × 1,227.13
  4. Step 4: Simplify right side
    1,643.31x = 3,015,647.43
  5. Step 5: Solve for x
    x = 3,015,647.43/1,643.31
  6. Step 6: Final answer
    x = 1,835.11

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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.