Home / 2,811.26-4,220.70-1,642.46

Finding the Fourth Proportional to 2,811.26, 4,220.70 and 1,642.46

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Solution

The fourth proportional to 2,811.26, 4,220.70 and 1,642.46 is: 2,465.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.26 : 4,220.70 = 1,642.46 : x
  2. Step 2: Convert to fraction form
    2,811.26/4,220.70 = 1,642.46/x
  3. Step 3: Cross multiply
    2,811.26x = 4,220.70 × 1,642.46
  4. Step 4: Simplify right side
    2,811.26x = 6,932,330.92
  5. Step 5: Solve for x
    x = 6,932,330.92/2,811.26
  6. Step 6: Final answer
    x = 2,465.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.