Home / 5,138.14-7,090.66-2,900.11

Finding the Fourth Proportional to 5,138.14, 7,090.66 and 2,900.11

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Solution

The fourth proportional to 5,138.14, 7,090.66 and 2,900.11 is: 4,002.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.14 : 7,090.66 = 2,900.11 : x
  2. Step 2: Convert to fraction form
    5,138.14/7,090.66 = 2,900.11/x
  3. Step 3: Cross multiply
    5,138.14x = 7,090.66 × 2,900.11
  4. Step 4: Simplify right side
    5,138.14x = 20,563,693.97
  5. Step 5: Solve for x
    x = 20,563,693.97/5,138.14
  6. Step 6: Final answer
    x = 4,002.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.