Home / 3,780.19-5,221.65-3,152.77

Finding the Fourth Proportional to 3,780.19, 5,221.65 and 3,152.77

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Solution

The fourth proportional to 3,780.19, 5,221.65 and 3,152.77 is: 4,354.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.19 : 5,221.65 = 3,152.77 : x
  2. Step 2: Convert to fraction form
    3,780.19/5,221.65 = 3,152.77/x
  3. Step 3: Cross multiply
    3,780.19x = 5,221.65 × 3,152.77
  4. Step 4: Simplify right side
    3,780.19x = 16,462,661.47
  5. Step 5: Solve for x
    x = 16,462,661.47/3,780.19
  6. Step 6: Final answer
    x = 4,354.98

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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.