Home / 5,379.40-8,069.91-1,680.83

Finding the Fourth Proportional to 5,379.40, 8,069.91 and 1,680.83

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Solution

The fourth proportional to 5,379.40, 8,069.91 and 1,680.83 is: 2,521.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,379.40 : 8,069.91 = 1,680.83 : x
  2. Step 2: Convert to fraction form
    5,379.40/8,069.91 = 1,680.83/x
  3. Step 3: Cross multiply
    5,379.40x = 8,069.91 × 1,680.83
  4. Step 4: Simplify right side
    5,379.40x = 13,564,146.83
  5. Step 5: Solve for x
    x = 13,564,146.83/5,379.40
  6. Step 6: Final answer
    x = 2,521.50

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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.