Home / 8,139.28-11,233.64-4,782.09

Finding the Fourth Proportional to 8,139.28, 11,233.64 and 4,782.09

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Solution

The fourth proportional to 8,139.28, 11,233.64 and 4,782.09 is: 6,600.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,139.28 : 11,233.64 = 4,782.09 : x
  2. Step 2: Convert to fraction form
    8,139.28/11,233.64 = 4,782.09/x
  3. Step 3: Cross multiply
    8,139.28x = 11,233.64 × 4,782.09
  4. Step 4: Simplify right side
    8,139.28x = 53,720,319.49
  5. Step 5: Solve for x
    x = 53,720,319.49/8,139.28
  6. Step 6: Final answer
    x = 6,600.13

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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.