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Finding the Fourth Proportional to 5,657.07, 7,801.74 and 3,665.55

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Solution

The fourth proportional to 5,657.07, 7,801.74 and 3,665.55 is: 5,055.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,657.07 : 7,801.74 = 3,665.55 : x
  2. Step 2: Convert to fraction form
    5,657.07/7,801.74 = 3,665.55/x
  3. Step 3: Cross multiply
    5,657.07x = 7,801.74 × 3,665.55
  4. Step 4: Simplify right side
    5,657.07x = 28,597,668.06
  5. Step 5: Solve for x
    x = 28,597,668.06/5,657.07
  6. Step 6: Final answer
    x = 5,055.21

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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.