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Finding the Fourth Proportional to 7,901.78, 10,904.25 and 4,364.42

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Solution

The fourth proportional to 7,901.78, 10,904.25 and 4,364.42 is: 6,022.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,901.78 : 10,904.25 = 4,364.42 : x
  2. Step 2: Convert to fraction form
    7,901.78/10,904.25 = 4,364.42/x
  3. Step 3: Cross multiply
    7,901.78x = 10,904.25 × 4,364.42
  4. Step 4: Simplify right side
    7,901.78x = 47,590,726.79
  5. Step 5: Solve for x
    x = 47,590,726.79/7,901.78
  6. Step 6: Final answer
    x = 6,022.79

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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.