Home / 7,929.72-10,942.56-4,392.86

Finding the Fourth Proportional to 7,929.72, 10,942.56 and 4,392.86

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Solution

The fourth proportional to 7,929.72, 10,942.56 and 4,392.86 is: 6,061.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,929.72 : 10,942.56 = 4,392.86 : x
  2. Step 2: Convert to fraction form
    7,929.72/10,942.56 = 4,392.86/x
  3. Step 3: Cross multiply
    7,929.72x = 10,942.56 × 4,392.86
  4. Step 4: Simplify right side
    7,929.72x = 48,069,079.41
  5. Step 5: Solve for x
    x = 48,069,079.41/7,929.72
  6. Step 6: Final answer
    x = 6,061.89

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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.