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Finding the Fourth Proportional to 7,885.61, 11,830.70 and 2,339.09

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Solution

The fourth proportional to 7,885.61, 11,830.70 and 2,339.09 is: 3,509.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,885.61 : 11,830.70 = 2,339.09 : x
  2. Step 2: Convert to fraction form
    7,885.61/11,830.70 = 2,339.09/x
  3. Step 3: Cross multiply
    7,885.61x = 11,830.70 × 2,339.09
  4. Step 4: Simplify right side
    7,885.61x = 27,673,001.21
  5. Step 5: Solve for x
    x = 27,673,001.21/7,885.61
  6. Step 6: Final answer
    x = 3,509.30

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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.