Home / 5,646.80-7,792.38-3,129.02

Finding the Fourth Proportional to 5,646.80, 7,792.38 and 3,129.02

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Solution

The fourth proportional to 5,646.80, 7,792.38 and 3,129.02 is: 4,317.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,646.80 : 7,792.38 = 3,129.02 : x
  2. Step 2: Convert to fraction form
    5,646.80/7,792.38 = 3,129.02/x
  3. Step 3: Cross multiply
    5,646.80x = 7,792.38 × 3,129.02
  4. Step 4: Simplify right side
    5,646.80x = 24,382,532.35
  5. Step 5: Solve for x
    x = 24,382,532.35/5,646.80
  6. Step 6: Final answer
    x = 4,317.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.