Home / 5,329.20-7,991.68-1,630.20

Finding the Fourth Proportional to 5,329.20, 7,991.68 and 1,630.20

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Solution

The fourth proportional to 5,329.20, 7,991.68 and 1,630.20 is: 2,444.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,329.20 : 7,991.68 = 1,630.20 : x
  2. Step 2: Convert to fraction form
    5,329.20/7,991.68 = 1,630.20/x
  3. Step 3: Cross multiply
    5,329.20x = 7,991.68 × 1,630.20
  4. Step 4: Simplify right side
    5,329.20x = 13,028,036.74
  5. Step 5: Solve for x
    x = 13,028,036.74/5,329.20
  6. Step 6: Final answer
    x = 2,444.65

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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.