Home / 2,852.52-3,938.22-1,909.68

Finding the Fourth Proportional to 2,852.52, 3,938.22 and 1,909.68

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Solution

The fourth proportional to 2,852.52, 3,938.22 and 1,909.68 is: 2,636.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,852.52 : 3,938.22 = 1,909.68 : x
  2. Step 2: Convert to fraction form
    2,852.52/3,938.22 = 1,909.68/x
  3. Step 3: Cross multiply
    2,852.52x = 3,938.22 × 1,909.68
  4. Step 4: Simplify right side
    2,852.52x = 7,520,739.97
  5. Step 5: Solve for x
    x = 7,520,739.97/2,852.52
  6. Step 6: Final answer
    x = 2,636.52

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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.