Home / 4,311.40-5,948.80-2,821.50

Finding the Fourth Proportional to 4,311.40, 5,948.80 and 2,821.50

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Solution

The fourth proportional to 4,311.40, 5,948.80 and 2,821.50 is: 3,893.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,311.40 : 5,948.80 = 2,821.50 : x
  2. Step 2: Convert to fraction form
    4,311.40/5,948.80 = 2,821.50/x
  3. Step 3: Cross multiply
    4,311.40x = 5,948.80 × 2,821.50
  4. Step 4: Simplify right side
    4,311.40x = 16,784,539.20
  5. Step 5: Solve for x
    x = 16,784,539.20/4,311.40
  6. Step 6: Final answer
    x = 3,893.06

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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.