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Finding the Fourth Proportional to 5,647.39, 7,790.53 and 3,756.55

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Solution

The fourth proportional to 5,647.39, 7,790.53 and 3,756.55 is: 5,182.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,647.39 : 7,790.53 = 3,756.55 : x
  2. Step 2: Convert to fraction form
    5,647.39/7,790.53 = 3,756.55/x
  3. Step 3: Cross multiply
    5,647.39x = 7,790.53 × 3,756.55
  4. Step 4: Simplify right side
    5,647.39x = 29,265,515.47
  5. Step 5: Solve for x
    x = 29,265,515.47/5,647.39
  6. Step 6: Final answer
    x = 5,182.13

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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.