Home / 4,978.40-7,467.32-1,515.38

Finding the Fourth Proportional to 4,978.40, 7,467.32 and 1,515.38

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Solution

The fourth proportional to 4,978.40, 7,467.32 and 1,515.38 is: 2,272.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,978.40 : 7,467.32 = 1,515.38 : x
  2. Step 2: Convert to fraction form
    4,978.40/7,467.32 = 1,515.38/x
  3. Step 3: Cross multiply
    4,978.40x = 7,467.32 × 1,515.38
  4. Step 4: Simplify right side
    4,978.40x = 11,315,793.83
  5. Step 5: Solve for x
    x = 11,315,793.83/4,978.40
  6. Step 6: Final answer
    x = 2,272.98

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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.