Home / 7,109.18-9,810.68-3,965.30

Finding the Fourth Proportional to 7,109.18, 9,810.68 and 3,965.30

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Solution

The fourth proportional to 7,109.18, 9,810.68 and 3,965.30 is: 5,472.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,109.18 : 9,810.68 = 3,965.30 : x
  2. Step 2: Convert to fraction form
    7,109.18/9,810.68 = 3,965.30/x
  3. Step 3: Cross multiply
    7,109.18x = 9,810.68 × 3,965.30
  4. Step 4: Simplify right side
    7,109.18x = 38,902,289.40
  5. Step 5: Solve for x
    x = 38,902,289.40/7,109.18
  6. Step 6: Final answer
    x = 5,472.12

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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.