Home / 7,690.85-11,541.95-3,311.59

Finding the Fourth Proportional to 7,690.85, 11,541.95 and 3,311.59

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Solution

The fourth proportional to 7,690.85, 11,541.95 and 3,311.59 is: 4,969.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,690.85 : 11,541.95 = 3,311.59 : x
  2. Step 2: Convert to fraction form
    7,690.85/11,541.95 = 3,311.59/x
  3. Step 3: Cross multiply
    7,690.85x = 11,541.95 × 3,311.59
  4. Step 4: Simplify right side
    7,690.85x = 38,222,206.20
  5. Step 5: Solve for x
    x = 38,222,206.20/7,690.85
  6. Step 6: Final answer
    x = 4,969.83

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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.