Home / 9,123.72-13,690.02-3,280.80

Finding the Fourth Proportional to 9,123.72, 13,690.02 and 3,280.80

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Solution

The fourth proportional to 9,123.72, 13,690.02 and 3,280.80 is: 4,922.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,123.72 : 13,690.02 = 3,280.80 : x
  2. Step 2: Convert to fraction form
    9,123.72/13,690.02 = 3,280.80/x
  3. Step 3: Cross multiply
    9,123.72x = 13,690.02 × 3,280.80
  4. Step 4: Simplify right side
    9,123.72x = 44,914,217.62
  5. Step 5: Solve for x
    x = 44,914,217.62/9,123.72
  6. Step 6: Final answer
    x = 4,922.80

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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.