Home / 5,311.40-7,328.34-3,321.80

Finding the Fourth Proportional to 5,311.40, 7,328.34 and 3,321.80

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Solution

The fourth proportional to 5,311.40, 7,328.34 and 3,321.80 is: 4,583.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,311.40 : 7,328.34 = 3,321.80 : x
  2. Step 2: Convert to fraction form
    5,311.40/7,328.34 = 3,321.80/x
  3. Step 3: Cross multiply
    5,311.40x = 7,328.34 × 3,321.80
  4. Step 4: Simplify right side
    5,311.40x = 24,343,279.81
  5. Step 5: Solve for x
    x = 24,343,279.81/5,311.40
  6. Step 6: Final answer
    x = 4,583.21

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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.