Home / 3,124.51-4,687.67-1,275.62

Finding the Fourth Proportional to 3,124.51, 4,687.67 and 1,275.62

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Solution

The fourth proportional to 3,124.51, 4,687.67 and 1,275.62 is: 1,913.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.51 : 4,687.67 = 1,275.62 : x
  2. Step 2: Convert to fraction form
    3,124.51/4,687.67 = 1,275.62/x
  3. Step 3: Cross multiply
    3,124.51x = 4,687.67 × 1,275.62
  4. Step 4: Simplify right side
    3,124.51x = 5,979,665.36
  5. Step 5: Solve for x
    x = 5,979,665.36/3,124.51
  6. Step 6: Final answer
    x = 1,913.79

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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.