Home / 4,921.80-7,390.16-4,236

Finding the Fourth Proportional to 4,921.80, 7,390.16 and 4,236

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Solution

The fourth proportional to 4,921.80, 7,390.16 and 4,236 is: 6,360.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,921.80 : 7,390.16 = 4,236 : x
  2. Step 2: Convert to fraction form
    4,921.80/7,390.16 = 4,236/x
  3. Step 3: Cross multiply
    4,921.80x = 7,390.16 × 4,236
  4. Step 4: Simplify right side
    4,921.80x = 31,304,717.76
  5. Step 5: Solve for x
    x = 31,304,717.76/4,921.80
  6. Step 6: Final answer
    x = 6,360.42

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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.