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Finding the Fourth Proportional to 5,284.60, 7,928.28 and 1,997.74

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Solution

The fourth proportional to 5,284.60, 7,928.28 and 1,997.74 is: 2,997.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,284.60 : 7,928.28 = 1,997.74 : x
  2. Step 2: Convert to fraction form
    5,284.60/7,928.28 = 1,997.74/x
  3. Step 3: Cross multiply
    5,284.60x = 7,928.28 × 1,997.74
  4. Step 4: Simplify right side
    5,284.60x = 15,838,642.09
  5. Step 5: Solve for x
    x = 15,838,642.09/5,284.60
  6. Step 6: Final answer
    x = 2,997.13

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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.