Home / 7,427.20-11,135.40-3,042.40

Finding the Fourth Proportional to 7,427.20, 11,135.40 and 3,042.40

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Solution

The fourth proportional to 7,427.20, 11,135.40 and 3,042.40 is: 4,561.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,427.20 : 11,135.40 = 3,042.40 : x
  2. Step 2: Convert to fraction form
    7,427.20/11,135.40 = 3,042.40/x
  3. Step 3: Cross multiply
    7,427.20x = 11,135.40 × 3,042.40
  4. Step 4: Simplify right side
    7,427.20x = 33,878,340.96
  5. Step 5: Solve for x
    x = 33,878,340.96/7,427.20
  6. Step 6: Final answer
    x = 4,561.39

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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.