Home / 7,116.11-9,821.22-3,972.50

Finding the Fourth Proportional to 7,116.11, 9,821.22 and 3,972.50

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Solution

The fourth proportional to 7,116.11, 9,821.22 and 3,972.50 is: 5,482.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,116.11 : 9,821.22 = 3,972.50 : x
  2. Step 2: Convert to fraction form
    7,116.11/9,821.22 = 3,972.50/x
  3. Step 3: Cross multiply
    7,116.11x = 9,821.22 × 3,972.50
  4. Step 4: Simplify right side
    7,116.11x = 39,014,796.45
  5. Step 5: Solve for x
    x = 39,014,796.45/7,116.11
  6. Step 6: Final answer
    x = 5,482.60

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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.