Home / 7,020.30-9,688.16-3,876.48

Finding the Fourth Proportional to 7,020.30, 9,688.16 and 3,876.48

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Solution

The fourth proportional to 7,020.30, 9,688.16 and 3,876.48 is: 5,349.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,020.30 : 9,688.16 = 3,876.48 : x
  2. Step 2: Convert to fraction form
    7,020.30/9,688.16 = 3,876.48/x
  3. Step 3: Cross multiply
    7,020.30x = 9,688.16 × 3,876.48
  4. Step 4: Simplify right side
    7,020.30x = 37,555,958.48
  5. Step 5: Solve for x
    x = 37,555,958.48/7,020.30
  6. Step 6: Final answer
    x = 5,349.62

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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.