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Finding the Fourth Proportional to 7,090.92, 10,590.84 and 5,137.20

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Solution

The fourth proportional to 7,090.92, 10,590.84 and 5,137.20 is: 7,672.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,090.92 : 10,590.84 = 5,137.20 : x
  2. Step 2: Convert to fraction form
    7,090.92/10,590.84 = 5,137.20/x
  3. Step 3: Cross multiply
    7,090.92x = 10,590.84 × 5,137.20
  4. Step 4: Simplify right side
    7,090.92x = 54,407,263.25
  5. Step 5: Solve for x
    x = 54,407,263.25/7,090.92
  6. Step 6: Final answer
    x = 7,672.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.