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Finding the Fourth Proportional to 5,285.68, 7,928.28 and 2,513.68

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Solution

The fourth proportional to 5,285.68, 7,928.28 and 2,513.68 is: 3,770.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,285.68 : 7,928.28 = 2,513.68 : x
  2. Step 2: Convert to fraction form
    5,285.68/7,928.28 = 2,513.68/x
  3. Step 3: Cross multiply
    5,285.68x = 7,928.28 × 2,513.68
  4. Step 4: Simplify right side
    5,285.68x = 19,929,158.87
  5. Step 5: Solve for x
    x = 19,929,158.87/5,285.68
  6. Step 6: Final answer
    x = 3,770.41

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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.