Home / 4,128.10-5,699.38-2,868.76

Finding the Fourth Proportional to 4,128.10, 5,699.38 and 2,868.76

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Solution

The fourth proportional to 4,128.10, 5,699.38 and 2,868.76 is: 3,960.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128.10 : 5,699.38 = 2,868.76 : x
  2. Step 2: Convert to fraction form
    4,128.10/5,699.38 = 2,868.76/x
  3. Step 3: Cross multiply
    4,128.10x = 5,699.38 × 2,868.76
  4. Step 4: Simplify right side
    4,128.10x = 16,350,153.37
  5. Step 5: Solve for x
    x = 16,350,153.37/4,128.10
  6. Step 6: Final answer
    x = 3,960.70

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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.