Home / 5,715.19-8,572.23-3,878.11

Finding the Fourth Proportional to 5,715.19, 8,572.23 and 3,878.11

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Solution

The fourth proportional to 5,715.19, 8,572.23 and 3,878.11 is: 5,816.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,715.19 : 8,572.23 = 3,878.11 : x
  2. Step 2: Convert to fraction form
    5,715.19/8,572.23 = 3,878.11/x
  3. Step 3: Cross multiply
    5,715.19x = 8,572.23 × 3,878.11
  4. Step 4: Simplify right side
    5,715.19x = 33,244,050.89
  5. Step 5: Solve for x
    x = 33,244,050.89/5,715.19
  6. Step 6: Final answer
    x = 5,816.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.