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Finding the Fourth Proportional to 7,892.86, 10,891.68 and 4,356.06

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Solution

The fourth proportional to 7,892.86, 10,891.68 and 4,356.06 is: 6,011.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,892.86 : 10,891.68 = 4,356.06 : x
  2. Step 2: Convert to fraction form
    7,892.86/10,891.68 = 4,356.06/x
  3. Step 3: Cross multiply
    7,892.86x = 10,891.68 × 4,356.06
  4. Step 4: Simplify right side
    7,892.86x = 47,444,811.58
  5. Step 5: Solve for x
    x = 47,444,811.58/7,892.86
  6. Step 6: Final answer
    x = 6,011.11

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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.