Home / 3,780.28-5,671.32-1,931.32

Finding the Fourth Proportional to 3,780.28, 5,671.32 and 1,931.32

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Solution

The fourth proportional to 3,780.28, 5,671.32 and 1,931.32 is: 2,897.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.28 : 5,671.32 = 1,931.32 : x
  2. Step 2: Convert to fraction form
    3,780.28/5,671.32 = 1,931.32/x
  3. Step 3: Cross multiply
    3,780.28x = 5,671.32 × 1,931.32
  4. Step 4: Simplify right side
    3,780.28x = 10,953,133.74
  5. Step 5: Solve for x
    x = 10,953,133.74/3,780.28
  6. Step 6: Final answer
    x = 2,897.44

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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.