Home / 8,147.02-11,238.84-5,631.70

Finding the Fourth Proportional to 8,147.02, 11,238.84 and 5,631.70

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Solution

The fourth proportional to 8,147.02, 11,238.84 and 5,631.70 is: 7,768.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,147.02 : 11,238.84 = 5,631.70 : x
  2. Step 2: Convert to fraction form
    8,147.02/11,238.84 = 5,631.70/x
  3. Step 3: Cross multiply
    8,147.02x = 11,238.84 × 5,631.70
  4. Step 4: Simplify right side
    8,147.02x = 63,293,775.23
  5. Step 5: Solve for x
    x = 63,293,775.23/8,147.02
  6. Step 6: Final answer
    x = 7,768.95

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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.