Home / 5,890.60-8,120.62-4,211.40

Finding the Fourth Proportional to 5,890.60, 8,120.62 and 4,211.40

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Solution

The fourth proportional to 5,890.60, 8,120.62 and 4,211.40 is: 5,805.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,890.60 : 8,120.62 = 4,211.40 : x
  2. Step 2: Convert to fraction form
    5,890.60/8,120.62 = 4,211.40/x
  3. Step 3: Cross multiply
    5,890.60x = 8,120.62 × 4,211.40
  4. Step 4: Simplify right side
    5,890.60x = 34,199,179.07
  5. Step 5: Solve for x
    x = 34,199,179.07/5,890.60
  6. Step 6: Final answer
    x = 5,805.72

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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.