Home / 8,543.20-12,814.80-3,611.56

Finding the Fourth Proportional to 8,543.20, 12,814.80 and 3,611.56

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Solution

The fourth proportional to 8,543.20, 12,814.80 and 3,611.56 is: 5,417.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,543.20 : 12,814.80 = 3,611.56 : x
  2. Step 2: Convert to fraction form
    8,543.20/12,814.80 = 3,611.56/x
  3. Step 3: Cross multiply
    8,543.20x = 12,814.80 × 3,611.56
  4. Step 4: Simplify right side
    8,543.20x = 46,281,419.09
  5. Step 5: Solve for x
    x = 46,281,419.09/8,543.20
  6. Step 6: Final answer
    x = 5,417.34

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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.