Home / 5,220.48-7,830.26-2,102.20

Finding the Fourth Proportional to 5,220.48, 7,830.26 and 2,102.20

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Solution

The fourth proportional to 5,220.48, 7,830.26 and 2,102.20 is: 3,153.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,220.48 : 7,830.26 = 2,102.20 : x
  2. Step 2: Convert to fraction form
    5,220.48/7,830.26 = 2,102.20/x
  3. Step 3: Cross multiply
    5,220.48x = 7,830.26 × 2,102.20
  4. Step 4: Simplify right side
    5,220.48x = 16,460,772.57
  5. Step 5: Solve for x
    x = 16,460,772.57/5,220.48
  6. Step 6: Final answer
    x = 3,153.11

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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.