Home / 5,405.40-8,110.80-3,067.20

Finding the Fourth Proportional to 5,405.40, 8,110.80 and 3,067.20

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Solution

The fourth proportional to 5,405.40, 8,110.80 and 3,067.20 is: 4,602.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,405.40 : 8,110.80 = 3,067.20 : x
  2. Step 2: Convert to fraction form
    5,405.40/8,110.80 = 3,067.20/x
  3. Step 3: Cross multiply
    5,405.40x = 8,110.80 × 3,067.20
  4. Step 4: Simplify right side
    5,405.40x = 24,877,445.76
  5. Step 5: Solve for x
    x = 24,877,445.76/5,405.40
  6. Step 6: Final answer
    x = 4,602.33

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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.