Home / 1,821.17-2,512.56-1,192.07

Finding the Fourth Proportional to 1,821.17, 2,512.56 and 1,192.07

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Solution

The fourth proportional to 1,821.17, 2,512.56 and 1,192.07 is: 1,644.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.17 : 2,512.56 = 1,192.07 : x
  2. Step 2: Convert to fraction form
    1,821.17/2,512.56 = 1,192.07/x
  3. Step 3: Cross multiply
    1,821.17x = 2,512.56 × 1,192.07
  4. Step 4: Simplify right side
    1,821.17x = 2,995,134.84
  5. Step 5: Solve for x
    x = 2,995,134.84/1,821.17
  6. Step 6: Final answer
    x = 1,644.63

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1.5x scale

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.