Home / 3,705.51-5,555.64-1,855.30

Finding the Fourth Proportional to 3,705.51, 5,555.64 and 1,855.30

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Solution

The fourth proportional to 3,705.51, 5,555.64 and 1,855.30 is: 2,781.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,705.51 : 5,555.64 = 1,855.30 : x
  2. Step 2: Convert to fraction form
    3,705.51/5,555.64 = 1,855.30/x
  3. Step 3: Cross multiply
    3,705.51x = 5,555.64 × 1,855.30
  4. Step 4: Simplify right side
    3,705.51x = 10,307,371.96
  5. Step 5: Solve for x
    x = 10,307,371.96/3,705.51
  6. Step 6: Final answer
    x = 2,781.63

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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.