Home / 7,868.57-10,858.61-4,331.78

Finding the Fourth Proportional to 7,868.57, 10,858.61 and 4,331.78

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Solution

The fourth proportional to 7,868.57, 10,858.61 and 4,331.78 is: 5,977.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,868.57 : 10,858.61 = 4,331.78 : x
  2. Step 2: Convert to fraction form
    7,868.57/10,858.61 = 4,331.78/x
  3. Step 3: Cross multiply
    7,868.57x = 10,858.61 × 4,331.78
  4. Step 4: Simplify right side
    7,868.57x = 47,037,082.52
  5. Step 5: Solve for x
    x = 47,037,082.52/7,868.57
  6. Step 6: Final answer
    x = 5,977.85

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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.