Home / 5,210.72-7,830.66-2,615.48

Finding the Fourth Proportional to 5,210.72, 7,830.66 and 2,615.48

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Solution

The fourth proportional to 5,210.72, 7,830.66 and 2,615.48 is: 3,930.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,210.72 : 7,830.66 = 2,615.48 : x
  2. Step 2: Convert to fraction form
    5,210.72/7,830.66 = 2,615.48/x
  3. Step 3: Cross multiply
    5,210.72x = 7,830.66 × 2,615.48
  4. Step 4: Simplify right side
    5,210.72x = 20,480,934.62
  5. Step 5: Solve for x
    x = 20,480,934.62/5,210.72
  6. Step 6: Final answer
    x = 3,930.54

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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.