Home / 5,518.80-8,278.38-1,623.60

Finding the Fourth Proportional to 5,518.80, 8,278.38 and 1,623.60

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Solution

The fourth proportional to 5,518.80, 8,278.38 and 1,623.60 is: 2,435.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,518.80 : 8,278.38 = 1,623.60 : x
  2. Step 2: Convert to fraction form
    5,518.80/8,278.38 = 1,623.60/x
  3. Step 3: Cross multiply
    5,518.80x = 8,278.38 × 1,623.60
  4. Step 4: Simplify right side
    5,518.80x = 13,440,777.77
  5. Step 5: Solve for x
    x = 13,440,777.77/5,518.80
  6. Step 6: Final answer
    x = 2,435.45

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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.