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Finding the Fourth Proportional to 1,851.52, 2,554.49 and 1,320.49

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Solution

The fourth proportional to 1,851.52, 2,554.49 and 1,320.49 is: 1,821.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,851.52 : 2,554.49 = 1,320.49 : x
  2. Step 2: Convert to fraction form
    1,851.52/2,554.49 = 1,320.49/x
  3. Step 3: Cross multiply
    1,851.52x = 2,554.49 × 1,320.49
  4. Step 4: Simplify right side
    1,851.52x = 3,373,159.13
  5. Step 5: Solve for x
    x = 3,373,159.13/1,851.52
  6. Step 6: Final answer
    x = 1,821.84

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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.