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Finding the Fourth Proportional to 5,393.39, 8,090.03 and 1,390.76

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Solution

The fourth proportional to 5,393.39, 8,090.03 and 1,390.76 is: 2,086.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,393.39 : 8,090.03 = 1,390.76 : x
  2. Step 2: Convert to fraction form
    5,393.39/8,090.03 = 1,390.76/x
  3. Step 3: Cross multiply
    5,393.39x = 8,090.03 × 1,390.76
  4. Step 4: Simplify right side
    5,393.39x = 11,251,283.49
  5. Step 5: Solve for x
    x = 11,251,283.49/5,393.39
  6. Step 6: Final answer
    x = 2,086.13

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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.