Home / 5,220.29-7,830.41-1,324.68

Finding the Fourth Proportional to 5,220.29, 7,830.41 and 1,324.68

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Solution

The fourth proportional to 5,220.29, 7,830.41 and 1,324.68 is: 1,987.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,220.29 : 7,830.41 = 1,324.68 : x
  2. Step 2: Convert to fraction form
    5,220.29/7,830.41 = 1,324.68/x
  3. Step 3: Cross multiply
    5,220.29x = 7,830.41 × 1,324.68
  4. Step 4: Simplify right side
    5,220.29x = 10,372,780.90
  5. Step 5: Solve for x
    x = 10,372,780.90/5,220.29
  6. Step 6: Final answer
    x = 1,987.01

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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.