Home / 5,285.62-7,289.12-3,160.81

Finding the Fourth Proportional to 5,285.62, 7,289.12 and 3,160.81

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Solution

The fourth proportional to 5,285.62, 7,289.12 and 3,160.81 is: 4,358.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,285.62 : 7,289.12 = 3,160.81 : x
  2. Step 2: Convert to fraction form
    5,285.62/7,289.12 = 3,160.81/x
  3. Step 3: Cross multiply
    5,285.62x = 7,289.12 × 3,160.81
  4. Step 4: Simplify right side
    5,285.62x = 23,039,509.65
  5. Step 5: Solve for x
    x = 23,039,509.65/5,285.62
  6. Step 6: Final answer
    x = 4,358.90

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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.