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Finding the Fourth Proportional to 7,900.11, 10,904.25 and 4,914.24

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Solution

The fourth proportional to 7,900.11, 10,904.25 and 4,914.24 is: 6,782.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,900.11 : 10,904.25 = 4,914.24 : x
  2. Step 2: Convert to fraction form
    7,900.11/10,904.25 = 4,914.24/x
  3. Step 3: Cross multiply
    7,900.11x = 10,904.25 × 4,914.24
  4. Step 4: Simplify right side
    7,900.11x = 53,586,101.52
  5. Step 5: Solve for x
    x = 53,586,101.52/7,900.11
  6. Step 6: Final answer
    x = 6,782.96

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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.