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Finding the Fourth Proportional to 5,582.80, 8,359.80 and 4,430.80

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Solution

The fourth proportional to 5,582.80, 8,359.80 and 4,430.80 is: 6,634.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,582.80 : 8,359.80 = 4,430.80 : x
  2. Step 2: Convert to fraction form
    5,582.80/8,359.80 = 4,430.80/x
  3. Step 3: Cross multiply
    5,582.80x = 8,359.80 × 4,430.80
  4. Step 4: Simplify right side
    5,582.80x = 37,040,601.84
  5. Step 5: Solve for x
    x = 37,040,601.84/5,582.80
  6. Step 6: Final answer
    x = 6,634.77

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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.