Home / 7,278.10-10,042.05-4,135.30

Finding the Fourth Proportional to 7,278.10, 10,042.05 and 4,135.30

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Solution

The fourth proportional to 7,278.10, 10,042.05 and 4,135.30 is: 5,705.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278.10 : 10,042.05 = 4,135.30 : x
  2. Step 2: Convert to fraction form
    7,278.10/10,042.05 = 4,135.30/x
  3. Step 3: Cross multiply
    7,278.10x = 10,042.05 × 4,135.30
  4. Step 4: Simplify right side
    7,278.10x = 41,526,889.37
  5. Step 5: Solve for x
    x = 41,526,889.37/7,278.10
  6. Step 6: Final answer
    x = 5,705.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.