Home / 8,775.02-12,105.39-5,187.56

Finding the Fourth Proportional to 8,775.02, 12,105.39 and 5,187.56

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Solution

The fourth proportional to 8,775.02, 12,105.39 and 5,187.56 is: 7,156.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,775.02 : 12,105.39 = 5,187.56 : x
  2. Step 2: Convert to fraction form
    8,775.02/12,105.39 = 5,187.56/x
  3. Step 3: Cross multiply
    8,775.02x = 12,105.39 × 5,187.56
  4. Step 4: Simplify right side
    8,775.02x = 62,797,436.95
  5. Step 5: Solve for x
    x = 62,797,436.95/8,775.02
  6. Step 6: Final answer
    x = 7,156.39

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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.