Home / 2,586.71-3,569.64-1,407.79

Finding the Fourth Proportional to 2,586.71, 3,569.64 and 1,407.79

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Solution

The fourth proportional to 2,586.71, 3,569.64 and 1,407.79 is: 1,942.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,586.71 : 3,569.64 = 1,407.79 : x
  2. Step 2: Convert to fraction form
    2,586.71/3,569.64 = 1,407.79/x
  3. Step 3: Cross multiply
    2,586.71x = 3,569.64 × 1,407.79
  4. Step 4: Simplify right side
    2,586.71x = 5,025,285.65
  5. Step 5: Solve for x
    x = 5,025,285.65/2,586.71
  6. Step 6: Final answer
    x = 1,942.73

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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.