Home / 7,113.31-9,816.67-3,969.50

Finding the Fourth Proportional to 7,113.31, 9,816.67 and 3,969.50

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Solution

The fourth proportional to 7,113.31, 9,816.67 and 3,969.50 is: 5,478.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,113.31 : 9,816.67 = 3,969.50 : x
  2. Step 2: Convert to fraction form
    7,113.31/9,816.67 = 3,969.50/x
  3. Step 3: Cross multiply
    7,113.31x = 9,816.67 × 3,969.50
  4. Step 4: Simplify right side
    7,113.31x = 38,967,227.44
  5. Step 5: Solve for x
    x = 38,967,227.44/7,113.31
  6. Step 6: Final answer
    x = 5,478.07

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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.