Home / 2,870.87-3,961.58-1,611.83

Finding the Fourth Proportional to 2,870.87, 3,961.58 and 1,611.83

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Solution

The fourth proportional to 2,870.87, 3,961.58 and 1,611.83 is: 2,224.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,870.87 : 3,961.58 = 1,611.83 : x
  2. Step 2: Convert to fraction form
    2,870.87/3,961.58 = 1,611.83/x
  3. Step 3: Cross multiply
    2,870.87x = 3,961.58 × 1,611.83
  4. Step 4: Simplify right side
    2,870.87x = 6,385,395.34
  5. Step 5: Solve for x
    x = 6,385,395.34/2,870.87
  6. Step 6: Final answer
    x = 2,224.21

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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.