Home / 5,219.50-7,202.68-3,124.78

Finding the Fourth Proportional to 5,219.50, 7,202.68 and 3,124.78

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Solution

The fourth proportional to 5,219.50, 7,202.68 and 3,124.78 is: 4,312.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,219.50 : 7,202.68 = 3,124.78 : x
  2. Step 2: Convert to fraction form
    5,219.50/7,202.68 = 3,124.78/x
  3. Step 3: Cross multiply
    5,219.50x = 7,202.68 × 3,124.78
  4. Step 4: Simplify right side
    5,219.50x = 22,506,790.41
  5. Step 5: Solve for x
    x = 22,506,790.41/5,219.50
  6. Step 6: Final answer
    x = 4,312.06

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1.5x scale

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.