Home / 3,897.18-5,378.79-2,303.76

Finding the Fourth Proportional to 3,897.18, 5,378.79 and 2,303.76

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Solution

The fourth proportional to 3,897.18, 5,378.79 and 2,303.76 is: 3,179.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,897.18 : 5,378.79 = 2,303.76 : x
  2. Step 2: Convert to fraction form
    3,897.18/5,378.79 = 2,303.76/x
  3. Step 3: Cross multiply
    3,897.18x = 5,378.79 × 2,303.76
  4. Step 4: Simplify right side
    3,897.18x = 12,391,441.25
  5. Step 5: Solve for x
    x = 12,391,441.25/3,897.18
  6. Step 6: Final answer
    x = 3,179.59

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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.