Home / 5,478.40-8,217.60-2,359.90

Finding the Fourth Proportional to 5,478.40, 8,217.60 and 2,359.90

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Solution

The fourth proportional to 5,478.40, 8,217.60 and 2,359.90 is: 3,539.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.40 : 8,217.60 = 2,359.90 : x
  2. Step 2: Convert to fraction form
    5,478.40/8,217.60 = 2,359.90/x
  3. Step 3: Cross multiply
    5,478.40x = 8,217.60 × 2,359.90
  4. Step 4: Simplify right side
    5,478.40x = 19,392,714.24
  5. Step 5: Solve for x
    x = 19,392,714.24/5,478.40
  6. Step 6: Final answer
    x = 3,539.85

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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.