Home / 2,311.55-3,482.94-1,909.69

Finding the Fourth Proportional to 2,311.55, 3,482.94 and 1,909.69

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Solution

The fourth proportional to 2,311.55, 3,482.94 and 1,909.69 is: 2,877.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.55 : 3,482.94 = 1,909.69 : x
  2. Step 2: Convert to fraction form
    2,311.55/3,482.94 = 1,909.69/x
  3. Step 3: Cross multiply
    2,311.55x = 3,482.94 × 1,909.69
  4. Step 4: Simplify right side
    2,311.55x = 6,651,335.69
  5. Step 5: Solve for x
    x = 6,651,335.69/2,311.55
  6. Step 6: Final answer
    x = 2,877.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.