Home / 9,143.28-13,712.64-3,519.81

Finding the Fourth Proportional to 9,143.28, 13,712.64 and 3,519.81

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Solution

The fourth proportional to 9,143.28, 13,712.64 and 3,519.81 is: 5,278.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,143.28 : 13,712.64 = 3,519.81 : x
  2. Step 2: Convert to fraction form
    9,143.28/13,712.64 = 3,519.81/x
  3. Step 3: Cross multiply
    9,143.28x = 13,712.64 × 3,519.81
  4. Step 4: Simplify right side
    9,143.28x = 48,265,887.40
  5. Step 5: Solve for x
    x = 48,265,887.40/9,143.28
  6. Step 6: Final answer
    x = 5,278.84

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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.