Home / 6,138.48-9,205.80-5,785.20

Finding the Fourth Proportional to 6,138.48, 9,205.80 and 5,785.20

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Solution

The fourth proportional to 6,138.48, 9,205.80 and 5,785.20 is: 8,675.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,138.48 : 9,205.80 = 5,785.20 : x
  2. Step 2: Convert to fraction form
    6,138.48/9,205.80 = 5,785.20/x
  3. Step 3: Cross multiply
    6,138.48x = 9,205.80 × 5,785.20
  4. Step 4: Simplify right side
    6,138.48x = 53,257,394.16
  5. Step 5: Solve for x
    x = 53,257,394.16/6,138.48
  6. Step 6: Final answer
    x = 8,675.99

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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.