Home / 2,618.42-3,611.90-1,909.32

Finding the Fourth Proportional to 2,618.42, 3,611.90 and 1,909.32

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Solution

The fourth proportional to 2,618.42, 3,611.90 and 1,909.32 is: 2,633.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618.42 : 3,611.90 = 1,909.32 : x
  2. Step 2: Convert to fraction form
    2,618.42/3,611.90 = 1,909.32/x
  3. Step 3: Cross multiply
    2,618.42x = 3,611.90 × 1,909.32
  4. Step 4: Simplify right side
    2,618.42x = 6,896,263.36
  5. Step 5: Solve for x
    x = 6,896,263.36/2,618.42
  6. Step 6: Final answer
    x = 2,633.75

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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.