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Finding the Fourth Proportional to 5,618.70, 8,428.05 and 1,923.48

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Solution

The fourth proportional to 5,618.70, 8,428.05 and 1,923.48 is: 2,885.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,618.70 : 8,428.05 = 1,923.48 : x
  2. Step 2: Convert to fraction form
    5,618.70/8,428.05 = 1,923.48/x
  3. Step 3: Cross multiply
    5,618.70x = 8,428.05 × 1,923.48
  4. Step 4: Simplify right side
    5,618.70x = 16,211,185.61
  5. Step 5: Solve for x
    x = 16,211,185.61/5,618.70
  6. Step 6: Final answer
    x = 2,885.22

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.