Home / 7,146.23-9,861.80-3,916.03

Finding the Fourth Proportional to 7,146.23, 9,861.80 and 3,916.03

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Solution

The fourth proportional to 7,146.23, 9,861.80 and 3,916.03 is: 5,404.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,146.23 : 9,861.80 = 3,916.03 : x
  2. Step 2: Convert to fraction form
    7,146.23/9,861.80 = 3,916.03/x
  3. Step 3: Cross multiply
    7,146.23x = 9,861.80 × 3,916.03
  4. Step 4: Simplify right side
    7,146.23x = 38,619,078.91
  5. Step 5: Solve for x
    x = 38,619,078.91/7,146.23
  6. Step 6: Final answer
    x = 5,404.12

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1.5x scale

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.