Home / 3,855.49-5,320.50-2,087.08

Finding the Fourth Proportional to 3,855.49, 5,320.50 and 2,087.08

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Solution

The fourth proportional to 3,855.49, 5,320.50 and 2,087.08 is: 2,880.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.49 : 5,320.50 = 2,087.08 : x
  2. Step 2: Convert to fraction form
    3,855.49/5,320.50 = 2,087.08/x
  3. Step 3: Cross multiply
    3,855.49x = 5,320.50 × 2,087.08
  4. Step 4: Simplify right side
    3,855.49x = 11,104,309.14
  5. Step 5: Solve for x
    x = 11,104,309.14/3,855.49
  6. Step 6: Final answer
    x = 2,880.13

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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.