Home / 9,278.78-13,920.60-3,435.98

Finding the Fourth Proportional to 9,278.78, 13,920.60 and 3,435.98

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Solution

The fourth proportional to 9,278.78, 13,920.60 and 3,435.98 is: 5,154.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,278.78 : 13,920.60 = 3,435.98 : x
  2. Step 2: Convert to fraction form
    9,278.78/13,920.60 = 3,435.98/x
  3. Step 3: Cross multiply
    9,278.78x = 13,920.60 × 3,435.98
  4. Step 4: Simplify right side
    9,278.78x = 47,830,903.19
  5. Step 5: Solve for x
    x = 47,830,903.19/9,278.78
  6. Step 6: Final answer
    x = 5,154.87

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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.