Home / 5,311.50-7,329.88-2,954.20

Finding the Fourth Proportional to 5,311.50, 7,329.88 and 2,954.20

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Solution

The fourth proportional to 5,311.50, 7,329.88 and 2,954.20 is: 4,076.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,311.50 : 7,329.88 = 2,954.20 : x
  2. Step 2: Convert to fraction form
    5,311.50/7,329.88 = 2,954.20/x
  3. Step 3: Cross multiply
    5,311.50x = 7,329.88 × 2,954.20
  4. Step 4: Simplify right side
    5,311.50x = 21,653,931.50
  5. Step 5: Solve for x
    x = 21,653,931.50/5,311.50
  6. Step 6: Final answer
    x = 4,076.80

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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.