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Finding the Fourth Proportional to 7,841.12, 11,762.04 and 2,647.04

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Solution

The fourth proportional to 7,841.12, 11,762.04 and 2,647.04 is: 3,970.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,841.12 : 11,762.04 = 2,647.04 : x
  2. Step 2: Convert to fraction form
    7,841.12/11,762.04 = 2,647.04/x
  3. Step 3: Cross multiply
    7,841.12x = 11,762.04 × 2,647.04
  4. Step 4: Simplify right side
    7,841.12x = 31,134,590.36
  5. Step 5: Solve for x
    x = 31,134,590.36/7,841.12
  6. Step 6: Final answer
    x = 3,970.68

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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.