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Finding the Fourth Proportional to 5,666.76, 7,820.63 and 3,149.38

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Solution

The fourth proportional to 5,666.76, 7,820.63 and 3,149.38 is: 4,346.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,666.76 : 7,820.63 = 3,149.38 : x
  2. Step 2: Convert to fraction form
    5,666.76/7,820.63 = 3,149.38/x
  3. Step 3: Cross multiply
    5,666.76x = 7,820.63 × 3,149.38
  4. Step 4: Simplify right side
    5,666.76x = 24,630,159.26
  5. Step 5: Solve for x
    x = 24,630,159.26/5,666.76
  6. Step 6: Final answer
    x = 4,346.43

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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.