Home / 2,870.13-3,960.82-1,611.46

Finding the Fourth Proportional to 2,870.13, 3,960.82 and 1,611.46

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Solution

The fourth proportional to 2,870.13, 3,960.82 and 1,611.46 is: 2,223.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,870.13 : 3,960.82 = 1,611.46 : x
  2. Step 2: Convert to fraction form
    2,870.13/3,960.82 = 1,611.46/x
  3. Step 3: Cross multiply
    2,870.13x = 3,960.82 × 1,611.46
  4. Step 4: Simplify right side
    2,870.13x = 6,382,675.14
  5. Step 5: Solve for x
    x = 6,382,675.14/2,870.13
  6. Step 6: Final answer
    x = 2,223.83

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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.