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Finding the Fourth Proportional to 7,891.02, 10,889.73 and 4,354.23

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Solution

The fourth proportional to 7,891.02, 10,889.73 and 4,354.23 is: 6,008.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,891.02 : 10,889.73 = 4,354.23 : x
  2. Step 2: Convert to fraction form
    7,891.02/10,889.73 = 4,354.23/x
  3. Step 3: Cross multiply
    7,891.02x = 10,889.73 × 4,354.23
  4. Step 4: Simplify right side
    7,891.02x = 47,416,389.06
  5. Step 5: Solve for x
    x = 47,416,389.06/7,891.02
  6. Step 6: Final answer
    x = 6,008.90

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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.