Home / 5,219.56-7,203.20-2,981.80

Finding the Fourth Proportional to 5,219.56, 7,203.20 and 2,981.80

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Solution

The fourth proportional to 5,219.56, 7,203.20 and 2,981.80 is: 4,115.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,219.56 : 7,203.20 = 2,981.80 : x
  2. Step 2: Convert to fraction form
    5,219.56/7,203.20 = 2,981.80/x
  3. Step 3: Cross multiply
    5,219.56x = 7,203.20 × 2,981.80
  4. Step 4: Simplify right side
    5,219.56x = 21,478,501.76
  5. Step 5: Solve for x
    x = 21,478,501.76/5,219.56
  6. Step 6: Final answer
    x = 4,115.00

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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.