Home / 7,868.75-10,858.48-4,331.88

Finding the Fourth Proportional to 7,868.75, 10,858.48 and 4,331.88

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Solution

The fourth proportional to 7,868.75, 10,858.48 and 4,331.88 is: 5,977.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,868.75 : 10,858.48 = 4,331.88 : x
  2. Step 2: Convert to fraction form
    7,868.75/10,858.48 = 4,331.88/x
  3. Step 3: Cross multiply
    7,868.75x = 10,858.48 × 4,331.88
  4. Step 4: Simplify right side
    7,868.75x = 47,037,621.51
  5. Step 5: Solve for x
    x = 47,037,621.51/7,868.75
  6. Step 6: Final answer
    x = 5,977.78

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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.