Home / 2,870.79-3,961.74-1,611.92

Finding the Fourth Proportional to 2,870.79, 3,961.74 and 1,611.92

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Solution

The fourth proportional to 2,870.79, 3,961.74 and 1,611.92 is: 2,224.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,870.79 : 3,961.74 = 1,611.92 : x
  2. Step 2: Convert to fraction form
    2,870.79/3,961.74 = 1,611.92/x
  3. Step 3: Cross multiply
    2,870.79x = 3,961.74 × 1,611.92
  4. Step 4: Simplify right side
    2,870.79x = 6,385,988.13
  5. Step 5: Solve for x
    x = 6,385,988.13/2,870.79
  6. Step 6: Final answer
    x = 2,224.47

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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.