Home / 3,780.90-5,645.85-3,088.92

Finding the Fourth Proportional to 3,780.90, 5,645.85 and 3,088.92

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Solution

The fourth proportional to 3,780.90, 5,645.85 and 3,088.92 is: 4,612.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.90 : 5,645.85 = 3,088.92 : x
  2. Step 2: Convert to fraction form
    3,780.90/5,645.85 = 3,088.92/x
  3. Step 3: Cross multiply
    3,780.90x = 5,645.85 × 3,088.92
  4. Step 4: Simplify right side
    3,780.90x = 17,439,578.98
  5. Step 5: Solve for x
    x = 17,439,578.98/3,780.90
  6. Step 6: Final answer
    x = 4,612.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.