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Finding the Fourth Proportional to 7,813.76, 11,726.28 and 3,070.62

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Solution

The fourth proportional to 7,813.76, 11,726.28 and 3,070.62 is: 4,608.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,813.76 : 11,726.28 = 3,070.62 : x
  2. Step 2: Convert to fraction form
    7,813.76/11,726.28 = 3,070.62/x
  3. Step 3: Cross multiply
    7,813.76x = 11,726.28 × 3,070.62
  4. Step 4: Simplify right side
    7,813.76x = 36,006,949.89
  5. Step 5: Solve for x
    x = 36,006,949.89/7,813.76
  6. Step 6: Final answer
    x = 4,608.15

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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.