Home / 2,185.68-3,037.12-2,158.08

Finding the Fourth Proportional to 2,185.68, 3,037.12 and 2,158.08

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Solution

The fourth proportional to 2,185.68, 3,037.12 and 2,158.08 is: 2,998.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,185.68 : 3,037.12 = 2,158.08 : x
  2. Step 2: Convert to fraction form
    2,185.68/3,037.12 = 2,158.08/x
  3. Step 3: Cross multiply
    2,185.68x = 3,037.12 × 2,158.08
  4. Step 4: Simplify right side
    2,185.68x = 6,554,347.93
  5. Step 5: Solve for x
    x = 6,554,347.93/2,185.68
  6. Step 6: Final answer
    x = 2,998.77

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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.