Home / 7,110.80-9,812.87-3,966.98

Finding the Fourth Proportional to 7,110.80, 9,812.87 and 3,966.98

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Solution

The fourth proportional to 7,110.80, 9,812.87 and 3,966.98 is: 5,474.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,110.80 : 9,812.87 = 3,966.98 : x
  2. Step 2: Convert to fraction form
    7,110.80/9,812.87 = 3,966.98/x
  3. Step 3: Cross multiply
    7,110.80x = 9,812.87 × 3,966.98
  4. Step 4: Simplify right side
    7,110.80x = 38,927,459.03
  5. Step 5: Solve for x
    x = 38,927,459.03/7,110.80
  6. Step 6: Final answer
    x = 5,474.42

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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.