Home / 2,870.61-3,961.43-1,611.66

Finding the Fourth Proportional to 2,870.61, 3,961.43 and 1,611.66

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Solution

The fourth proportional to 2,870.61, 3,961.43 and 1,611.66 is: 2,224.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,870.61 : 3,961.43 = 1,611.66 : x
  2. Step 2: Convert to fraction form
    2,870.61/3,961.43 = 1,611.66/x
  3. Step 3: Cross multiply
    2,870.61x = 3,961.43 × 1,611.66
  4. Step 4: Simplify right side
    2,870.61x = 6,384,478.27
  5. Step 5: Solve for x
    x = 6,384,478.27/2,870.61
  6. Step 6: Final answer
    x = 2,224.08

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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.