Home / 9,146.31-13,720.11-3,880.72

Finding the Fourth Proportional to 9,146.31, 13,720.11 and 3,880.72

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Solution

The fourth proportional to 9,146.31, 13,720.11 and 3,880.72 is: 5,821.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,146.31 : 13,720.11 = 3,880.72 : x
  2. Step 2: Convert to fraction form
    9,146.31/13,720.11 = 3,880.72/x
  3. Step 3: Cross multiply
    9,146.31x = 13,720.11 × 3,880.72
  4. Step 4: Simplify right side
    9,146.31x = 53,243,905.28
  5. Step 5: Solve for x
    x = 53,243,905.28/9,146.31
  6. Step 6: Final answer
    x = 5,821.35

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1.5x scale

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.