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Finding the Fourth Proportional to 5,390.93, 8,090.12 and 1,880.97

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Solution

The fourth proportional to 5,390.93, 8,090.12 and 1,880.97 is: 2,822.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.93 : 8,090.12 = 1,880.97 : x
  2. Step 2: Convert to fraction form
    5,390.93/8,090.12 = 1,880.97/x
  3. Step 3: Cross multiply
    5,390.93x = 8,090.12 × 1,880.97
  4. Step 4: Simplify right side
    5,390.93x = 15,217,273.02
  5. Step 5: Solve for x
    x = 15,217,273.02/5,390.93
  6. Step 6: Final answer
    x = 2,822.75

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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.