Home / 5,520.40-8,279.80-1,624.40

Finding the Fourth Proportional to 5,520.40, 8,279.80 and 1,624.40

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Solution

The fourth proportional to 5,520.40, 8,279.80 and 1,624.40 is: 2,436.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,520.40 : 8,279.80 = 1,624.40 : x
  2. Step 2: Convert to fraction form
    5,520.40/8,279.80 = 1,624.40/x
  3. Step 3: Cross multiply
    5,520.40x = 8,279.80 × 1,624.40
  4. Step 4: Simplify right side
    5,520.40x = 13,449,707.12
  5. Step 5: Solve for x
    x = 13,449,707.12/5,520.40
  6. Step 6: Final answer
    x = 2,436.36

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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.