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Finding the Fourth Proportional to 5,333.64, 7,988.78 and 4,398.68

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Solution

The fourth proportional to 5,333.64, 7,988.78 and 4,398.68 is: 6,588.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,333.64 : 7,988.78 = 4,398.68 : x
  2. Step 2: Convert to fraction form
    5,333.64/7,988.78 = 4,398.68/x
  3. Step 3: Cross multiply
    5,333.64x = 7,988.78 × 4,398.68
  4. Step 4: Simplify right side
    5,333.64x = 35,140,086.81
  5. Step 5: Solve for x
    x = 35,140,086.81/5,333.64
  6. Step 6: Final answer
    x = 6,588.39

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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.