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Finding the Fourth Proportional to 1,854.93, 2,782.55 and 759.00

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Solution

The fourth proportional to 1,854.93, 2,782.55 and 759.00 is: 1,138.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,854.93 : 2,782.55 = 759.00 : x
  2. Step 2: Convert to fraction form
    1,854.93/2,782.55 = 759.00/x
  3. Step 3: Cross multiply
    1,854.93x = 2,782.55 × 759.00
  4. Step 4: Simplify right side
    1,854.93x = 2,111,967.78
  5. Step 5: Solve for x
    x = 2,111,967.78/1,854.93
  6. Step 6: Final answer
    x = 1,138.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.