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Finding the Fourth Proportional to 5,423.84, 7,484.84 and 3,185.32

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Solution

The fourth proportional to 5,423.84, 7,484.84 and 3,185.32 is: 4,395.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,423.84 : 7,484.84 = 3,185.32 : x
  2. Step 2: Convert to fraction form
    5,423.84/7,484.84 = 3,185.32/x
  3. Step 3: Cross multiply
    5,423.84x = 7,484.84 × 3,185.32
  4. Step 4: Simplify right side
    5,423.84x = 23,841,610.55
  5. Step 5: Solve for x
    x = 23,841,610.55/5,423.84
  6. Step 6: Final answer
    x = 4,395.71

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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.