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Finding the Fourth Proportional to 1,855.83, 2,555.85 and 1,717.32

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Solution

The fourth proportional to 1,855.83, 2,555.85 and 1,717.32 is: 2,365.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,855.83 : 2,555.85 = 1,717.32 : x
  2. Step 2: Convert to fraction form
    1,855.83/2,555.85 = 1,717.32/x
  3. Step 3: Cross multiply
    1,855.83x = 2,555.85 × 1,717.32
  4. Step 4: Simplify right side
    1,855.83x = 4,389,212.32
  5. Step 5: Solve for x
    x = 4,389,212.32/1,855.83
  6. Step 6: Final answer
    x = 2,365.09

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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.