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Finding the Fourth Proportional to 1,755.08, 2,422.54 and 1,047.42

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Solution

The fourth proportional to 1,755.08, 2,422.54 and 1,047.42 is: 1,445.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,755.08 : 2,422.54 = 1,047.42 : x
  2. Step 2: Convert to fraction form
    1,755.08/2,422.54 = 1,047.42/x
  3. Step 3: Cross multiply
    1,755.08x = 2,422.54 × 1,047.42
  4. Step 4: Simplify right side
    1,755.08x = 2,537,405.55
  5. Step 5: Solve for x
    x = 2,537,405.55/1,755.08
  6. Step 6: Final answer
    x = 1,445.75

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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.