Home / 5,319.92-7,980.36-1,622.20

Finding the Fourth Proportional to 5,319.92, 7,980.36 and 1,622.20

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Solution

The fourth proportional to 5,319.92, 7,980.36 and 1,622.20 is: 2,433.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,319.92 : 7,980.36 = 1,622.20 : x
  2. Step 2: Convert to fraction form
    5,319.92/7,980.36 = 1,622.20/x
  3. Step 3: Cross multiply
    5,319.92x = 7,980.36 × 1,622.20
  4. Step 4: Simplify right side
    5,319.92x = 12,945,739.99
  5. Step 5: Solve for x
    x = 12,945,739.99/5,319.92
  6. Step 6: Final answer
    x = 2,433.45

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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.