Home / 7,090.10-10,635.55-2,159.90

Finding the Fourth Proportional to 7,090.10, 10,635.55 and 2,159.90

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Solution

The fourth proportional to 7,090.10, 10,635.55 and 2,159.90 is: 3,239.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,090.10 : 10,635.55 = 2,159.90 : x
  2. Step 2: Convert to fraction form
    7,090.10/10,635.55 = 2,159.90/x
  3. Step 3: Cross multiply
    7,090.10x = 10,635.55 × 2,159.90
  4. Step 4: Simplify right side
    7,090.10x = 22,971,724.45
  5. Step 5: Solve for x
    x = 22,971,724.45/7,090.10
  6. Step 6: Final answer
    x = 3,239.97

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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.