Home / 2,909.89-4,015.67-1,583.61

Finding the Fourth Proportional to 2,909.89, 4,015.67 and 1,583.61

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Solution

The fourth proportional to 2,909.89, 4,015.67 and 1,583.61 is: 2,185.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909.89 : 4,015.67 = 1,583.61 : x
  2. Step 2: Convert to fraction form
    2,909.89/4,015.67 = 1,583.61/x
  3. Step 3: Cross multiply
    2,909.89x = 4,015.67 × 1,583.61
  4. Step 4: Simplify right side
    2,909.89x = 6,359,247.94
  5. Step 5: Solve for x
    x = 6,359,247.94/2,909.89
  6. Step 6: Final answer
    x = 2,185.39

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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.