Home / 5,220.80-7,833.45-3,031.40

Finding the Fourth Proportional to 5,220.80, 7,833.45 and 3,031.40

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Solution

The fourth proportional to 5,220.80, 7,833.45 and 3,031.40 is: 4,548.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,220.80 : 7,833.45 = 3,031.40 : x
  2. Step 2: Convert to fraction form
    5,220.80/7,833.45 = 3,031.40/x
  3. Step 3: Cross multiply
    5,220.80x = 7,833.45 × 3,031.40
  4. Step 4: Simplify right side
    5,220.80x = 23,746,320.33
  5. Step 5: Solve for x
    x = 23,746,320.33/5,220.80
  6. Step 6: Final answer
    x = 4,548.41

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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.