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Finding the Fourth Proportional to 7,840.02, 11,748.99 and 4,331.61

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Solution

The fourth proportional to 7,840.02, 11,748.99 and 4,331.61 is: 6,491.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,840.02 : 11,748.99 = 4,331.61 : x
  2. Step 2: Convert to fraction form
    7,840.02/11,748.99 = 4,331.61/x
  3. Step 3: Cross multiply
    7,840.02x = 11,748.99 × 4,331.61
  4. Step 4: Simplify right side
    7,840.02x = 50,892,042.57
  5. Step 5: Solve for x
    x = 50,892,042.57/7,840.02
  6. Step 6: Final answer
    x = 6,491.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.