Home / 3,561.30-5,329.80-3,123.90

Finding the Fourth Proportional to 3,561.30, 5,329.80 and 3,123.90

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Solution

The fourth proportional to 3,561.30, 5,329.80 and 3,123.90 is: 4,675.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,561.30 : 5,329.80 = 3,123.90 : x
  2. Step 2: Convert to fraction form
    3,561.30/5,329.80 = 3,123.90/x
  3. Step 3: Cross multiply
    3,561.30x = 5,329.80 × 3,123.90
  4. Step 4: Simplify right side
    3,561.30x = 16,649,762.22
  5. Step 5: Solve for x
    x = 16,649,762.22/3,561.30
  6. Step 6: Final answer
    x = 4,675.19

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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.