Home / 4,990.70-6,887.24-3,000.87

Finding the Fourth Proportional to 4,990.70, 6,887.24 and 3,000.87

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Solution

The fourth proportional to 4,990.70, 6,887.24 and 3,000.87 is: 4,141.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.70 : 6,887.24 = 3,000.87 : x
  2. Step 2: Convert to fraction form
    4,990.70/6,887.24 = 3,000.87/x
  3. Step 3: Cross multiply
    4,990.70x = 6,887.24 × 3,000.87
  4. Step 4: Simplify right side
    4,990.70x = 20,667,696.89
  5. Step 5: Solve for x
    x = 20,667,696.89/4,990.70
  6. Step 6: Final answer
    x = 4,141.25

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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.