Home / 5,811.70-8,020.18-3,421.76

Finding the Fourth Proportional to 5,811.70, 8,020.18 and 3,421.76

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Solution

The fourth proportional to 5,811.70, 8,020.18 and 3,421.76 is: 4,722.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,811.70 : 8,020.18 = 3,421.76 : x
  2. Step 2: Convert to fraction form
    5,811.70/8,020.18 = 3,421.76/x
  3. Step 3: Cross multiply
    5,811.70x = 8,020.18 × 3,421.76
  4. Step 4: Simplify right side
    5,811.70x = 27,443,140.41
  5. Step 5: Solve for x
    x = 27,443,140.41/5,811.70
  6. Step 6: Final answer
    x = 4,722.05

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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.