Home / 5,665.64-7,818.04-3,147.72

Finding the Fourth Proportional to 5,665.64, 7,818.04 and 3,147.72

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Solution

The fourth proportional to 5,665.64, 7,818.04 and 3,147.72 is: 4,343.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,665.64 : 7,818.04 = 3,147.72 : x
  2. Step 2: Convert to fraction form
    5,665.64/7,818.04 = 3,147.72/x
  3. Step 3: Cross multiply
    5,665.64x = 7,818.04 × 3,147.72
  4. Step 4: Simplify right side
    5,665.64x = 24,609,000.87
  5. Step 5: Solve for x
    x = 24,609,000.87/5,665.64
  6. Step 6: Final answer
    x = 4,343.55

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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.