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Finding the Fourth Proportional to 7,892.79, 10,892.32 and 4,356.00

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Solution

The fourth proportional to 7,892.79, 10,892.32 and 4,356.00 is: 6,011.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,892.79 : 10,892.32 = 4,356.00 : x
  2. Step 2: Convert to fraction form
    7,892.79/10,892.32 = 4,356.00/x
  3. Step 3: Cross multiply
    7,892.79x = 10,892.32 × 4,356.00
  4. Step 4: Simplify right side
    7,892.79x = 47,446,990.17
  5. Step 5: Solve for x
    x = 47,446,990.17/7,892.79
  6. Step 6: Final answer
    x = 6,011.43

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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.