Home / 3,385.29-4,671.66-1,987.77

Finding the Fourth Proportional to 3,385.29, 4,671.66 and 1,987.77

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Solution

The fourth proportional to 3,385.29, 4,671.66 and 1,987.77 is: 2,743.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,385.29 : 4,671.66 = 1,987.77 : x
  2. Step 2: Convert to fraction form
    3,385.29/4,671.66 = 1,987.77/x
  3. Step 3: Cross multiply
    3,385.29x = 4,671.66 × 1,987.77
  4. Step 4: Simplify right side
    3,385.29x = 9,286,185.60
  5. Step 5: Solve for x
    x = 9,286,185.60/3,385.29
  6. Step 6: Final answer
    x = 2,743.10

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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.