Home / 9,391.31-12,960-5,358.02

Finding the Fourth Proportional to 9,391.31, 12,960 and 5,358.02

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Solution

The fourth proportional to 9,391.31, 12,960 and 5,358.02 is: 7,394.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,391.31 : 12,960 = 5,358.02 : x
  2. Step 2: Convert to fraction form
    9,391.31/12,960 = 5,358.02/x
  3. Step 3: Cross multiply
    9,391.31x = 12,960 × 5,358.02
  4. Step 4: Simplify right side
    9,391.31x = 69,439,874.40
  5. Step 5: Solve for x
    x = 69,439,874.40/9,391.31
  6. Step 6: Final answer
    x = 7,394.06

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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.