Home / 8,409.02-12,611.70-3,143.81

Finding the Fourth Proportional to 8,409.02, 12,611.70 and 3,143.81

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Solution

The fourth proportional to 8,409.02, 12,611.70 and 3,143.81 is: 4,715.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,409.02 : 12,611.70 = 3,143.81 : x
  2. Step 2: Convert to fraction form
    8,409.02/12,611.70 = 3,143.81/x
  3. Step 3: Cross multiply
    8,409.02x = 12,611.70 × 3,143.81
  4. Step 4: Simplify right side
    8,409.02x = 39,648,820.11
  5. Step 5: Solve for x
    x = 39,648,820.11/8,409.02
  6. Step 6: Final answer
    x = 4,715.04

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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.