Home / 2,870.24-3,960.79-1,611.14

Finding the Fourth Proportional to 2,870.24, 3,960.79 and 1,611.14

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Solution

The fourth proportional to 2,870.24, 3,960.79 and 1,611.14 is: 2,223.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,870.24 : 3,960.79 = 1,611.14 : x
  2. Step 2: Convert to fraction form
    2,870.24/3,960.79 = 1,611.14/x
  3. Step 3: Cross multiply
    2,870.24x = 3,960.79 × 1,611.14
  4. Step 4: Simplify right side
    2,870.24x = 6,381,363.37
  5. Step 5: Solve for x
    x = 6,381,363.37/2,870.24
  6. Step 6: Final answer
    x = 2,223.29

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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.