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Finding the Fourth Proportional to 1,751.88, 2,418.75 and 1,089.66

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Solution

The fourth proportional to 1,751.88, 2,418.75 and 1,089.66 is: 1,504.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,751.88 : 2,418.75 = 1,089.66 : x
  2. Step 2: Convert to fraction form
    1,751.88/2,418.75 = 1,089.66/x
  3. Step 3: Cross multiply
    1,751.88x = 2,418.75 × 1,089.66
  4. Step 4: Simplify right side
    1,751.88x = 2,635,615.13
  5. Step 5: Solve for x
    x = 2,635,615.13/1,751.88
  6. Step 6: Final answer
    x = 1,504.45

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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.