Home / 7,084.99-9,777.50-3,898.14

Finding the Fourth Proportional to 7,084.99, 9,777.50 and 3,898.14

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Solution

The fourth proportional to 7,084.99, 9,777.50 and 3,898.14 is: 5,379.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,084.99 : 9,777.50 = 3,898.14 : x
  2. Step 2: Convert to fraction form
    7,084.99/9,777.50 = 3,898.14/x
  3. Step 3: Cross multiply
    7,084.99x = 9,777.50 × 3,898.14
  4. Step 4: Simplify right side
    7,084.99x = 38,114,063.85
  5. Step 5: Solve for x
    x = 38,114,063.85/7,084.99
  6. Step 6: Final answer
    x = 5,379.55

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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.