Home / 3,855.17-5,342.12-3,621.08

Finding the Fourth Proportional to 3,855.17, 5,342.12 and 3,621.08

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Solution

The fourth proportional to 3,855.17, 5,342.12 and 3,621.08 is: 5,017.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.17 : 5,342.12 = 3,621.08 : x
  2. Step 2: Convert to fraction form
    3,855.17/5,342.12 = 3,621.08/x
  3. Step 3: Cross multiply
    3,855.17x = 5,342.12 × 3,621.08
  4. Step 4: Simplify right side
    3,855.17x = 19,344,199.07
  5. Step 5: Solve for x
    x = 19,344,199.07/3,855.17
  6. Step 6: Final answer
    x = 5,017.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.