Home / 4,206.87-6,311.52-1,285.20

Finding the Fourth Proportional to 4,206.87, 6,311.52 and 1,285.20

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Solution

The fourth proportional to 4,206.87, 6,311.52 and 1,285.20 is: 1,928.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,206.87 : 6,311.52 = 1,285.20 : x
  2. Step 2: Convert to fraction form
    4,206.87/6,311.52 = 1,285.20/x
  3. Step 3: Cross multiply
    4,206.87x = 6,311.52 × 1,285.20
  4. Step 4: Simplify right side
    4,206.87x = 8,111,565.50
  5. Step 5: Solve for x
    x = 8,111,565.50/4,206.87
  6. Step 6: Final answer
    x = 1,928.17

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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.