Home / 7,113.14-9,816.12-3,969.34

Finding the Fourth Proportional to 7,113.14, 9,816.12 and 3,969.34

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Solution

The fourth proportional to 7,113.14, 9,816.12 and 3,969.34 is: 5,477.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,113.14 : 9,816.12 = 3,969.34 : x
  2. Step 2: Convert to fraction form
    7,113.14/9,816.12 = 3,969.34/x
  3. Step 3: Cross multiply
    7,113.14x = 9,816.12 × 3,969.34
  4. Step 4: Simplify right side
    7,113.14x = 38,963,517.76
  5. Step 5: Solve for x
    x = 38,963,517.76/7,113.14
  6. Step 6: Final answer
    x = 5,477.68

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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.