Home / 5,869.21-8,811.64-3,405.80

Finding the Fourth Proportional to 5,869.21, 8,811.64 and 3,405.80

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Solution

The fourth proportional to 5,869.21, 8,811.64 and 3,405.80 is: 5,113.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,869.21 : 8,811.64 = 3,405.80 : x
  2. Step 2: Convert to fraction form
    5,869.21/8,811.64 = 3,405.80/x
  3. Step 3: Cross multiply
    5,869.21x = 8,811.64 × 3,405.80
  4. Step 4: Simplify right side
    5,869.21x = 30,010,641.08
  5. Step 5: Solve for x
    x = 30,010,641.08/5,869.21
  6. Step 6: Final answer
    x = 5,113.23

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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.