Home / 5,480.10-8,220.15-1,971.79

Finding the Fourth Proportional to 5,480.10, 8,220.15 and 1,971.79

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Solution

The fourth proportional to 5,480.10, 8,220.15 and 1,971.79 is: 2,957.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,480.10 : 8,220.15 = 1,971.79 : x
  2. Step 2: Convert to fraction form
    5,480.10/8,220.15 = 1,971.79/x
  3. Step 3: Cross multiply
    5,480.10x = 8,220.15 × 1,971.79
  4. Step 4: Simplify right side
    5,480.10x = 16,208,389.02
  5. Step 5: Solve for x
    x = 16,208,389.02/5,480.10
  6. Step 6: Final answer
    x = 2,957.68

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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.