Home / 7,138.21-10,707.55-2,458.17

Finding the Fourth Proportional to 7,138.21, 10,707.55 and 2,458.17

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Solution

The fourth proportional to 7,138.21, 10,707.55 and 2,458.17 is: 3,687.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,138.21 : 10,707.55 = 2,458.17 : x
  2. Step 2: Convert to fraction form
    7,138.21/10,707.55 = 2,458.17/x
  3. Step 3: Cross multiply
    7,138.21x = 10,707.55 × 2,458.17
  4. Step 4: Simplify right side
    7,138.21x = 26,320,978.18
  5. Step 5: Solve for x
    x = 26,320,978.18/7,138.21
  6. Step 6: Final answer
    x = 3,687.34

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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.