Home / 1,968.17-2,715.12-1,223.00

Finding the Fourth Proportional to 1,968.17, 2,715.12 and 1,223.00

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Solution

The fourth proportional to 1,968.17, 2,715.12 and 1,223.00 is: 1,687.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.17 : 2,715.12 = 1,223.00 : x
  2. Step 2: Convert to fraction form
    1,968.17/2,715.12 = 1,223.00/x
  3. Step 3: Cross multiply
    1,968.17x = 2,715.12 × 1,223.00
  4. Step 4: Simplify right side
    1,968.17x = 3,320,588.37
  5. Step 5: Solve for x
    x = 3,320,588.37/1,968.17
  6. Step 6: Final answer
    x = 1,687.15

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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.