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Finding the Fourth Proportional to 1,845.51, 2,766.59 and 921.35

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Solution

The fourth proportional to 1,845.51, 2,766.59 and 921.35 is: 1,381.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,845.51 : 2,766.59 = 921.35 : x
  2. Step 2: Convert to fraction form
    1,845.51/2,766.59 = 921.35/x
  3. Step 3: Cross multiply
    1,845.51x = 2,766.59 × 921.35
  4. Step 4: Simplify right side
    1,845.51x = 2,548,997.70
  5. Step 5: Solve for x
    x = 2,548,997.70/1,845.51
  6. Step 6: Final answer
    x = 1,381.19

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1.5x scale

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.