Home / 6,320.40-9,477.20-2,101.76

Finding the Fourth Proportional to 6,320.40, 9,477.20 and 2,101.76

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Solution

The fourth proportional to 6,320.40, 9,477.20 and 2,101.76 is: 3,151.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,320.40 : 9,477.20 = 2,101.76 : x
  2. Step 2: Convert to fraction form
    6,320.40/9,477.20 = 2,101.76/x
  3. Step 3: Cross multiply
    6,320.40x = 9,477.20 × 2,101.76
  4. Step 4: Simplify right side
    6,320.40x = 19,918,799.87
  5. Step 5: Solve for x
    x = 19,918,799.87/6,320.40
  6. Step 6: Final answer
    x = 3,151.51

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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.