Home / 5,223.97-7,209.45-2,985.80

Finding the Fourth Proportional to 5,223.97, 7,209.45 and 2,985.80

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Solution

The fourth proportional to 5,223.97, 7,209.45 and 2,985.80 is: 4,120.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,223.97 : 7,209.45 = 2,985.80 : x
  2. Step 2: Convert to fraction form
    5,223.97/7,209.45 = 2,985.80/x
  3. Step 3: Cross multiply
    5,223.97x = 7,209.45 × 2,985.80
  4. Step 4: Simplify right side
    5,223.97x = 21,525,975.81
  5. Step 5: Solve for x
    x = 21,525,975.81/5,223.97
  6. Step 6: Final answer
    x = 4,120.62

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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.