Home / 3,442.31-5,162.78-1,686.56

Finding the Fourth Proportional to 3,442.31, 5,162.78 and 1,686.56

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Solution

The fourth proportional to 3,442.31, 5,162.78 and 1,686.56 is: 2,529.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,442.31 : 5,162.78 = 1,686.56 : x
  2. Step 2: Convert to fraction form
    3,442.31/5,162.78 = 1,686.56/x
  3. Step 3: Cross multiply
    3,442.31x = 5,162.78 × 1,686.56
  4. Step 4: Simplify right side
    3,442.31x = 8,707,303.99
  5. Step 5: Solve for x
    x = 8,707,303.99/3,442.31
  6. Step 6: Final answer
    x = 2,529.50

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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.