Home / 8,921.12-12,310.74-4,887.93

Finding the Fourth Proportional to 8,921.12, 12,310.74 and 4,887.93

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Solution

The fourth proportional to 8,921.12, 12,310.74 and 4,887.93 is: 6,745.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.12 : 12,310.74 = 4,887.93 : x
  2. Step 2: Convert to fraction form
    8,921.12/12,310.74 = 4,887.93/x
  3. Step 3: Cross multiply
    8,921.12x = 12,310.74 × 4,887.93
  4. Step 4: Simplify right side
    8,921.12x = 60,174,035.37
  5. Step 5: Solve for x
    x = 60,174,035.37/8,921.12
  6. Step 6: Final answer
    x = 6,745.12

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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.