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Finding the Fourth Proportional to 5,666.78, 7,809.26 and 3,776.24

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Solution

The fourth proportional to 5,666.78, 7,809.26 and 3,776.24 is: 5,203.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,666.78 : 7,809.26 = 3,776.24 : x
  2. Step 2: Convert to fraction form
    5,666.78/7,809.26 = 3,776.24/x
  3. Step 3: Cross multiply
    5,666.78x = 7,809.26 × 3,776.24
  4. Step 4: Simplify right side
    5,666.78x = 29,489,639.98
  5. Step 5: Solve for x
    x = 29,489,639.98/5,666.78
  6. Step 6: Final answer
    x = 5,203.95

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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.