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Finding the Fourth Proportional to 1,582.65, 2,371.64 and 1,409.65

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Solution

The fourth proportional to 1,582.65, 2,371.64 and 1,409.65 is: 2,112.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,582.65 : 2,371.64 = 1,409.65 : x
  2. Step 2: Convert to fraction form
    1,582.65/2,371.64 = 1,409.65/x
  3. Step 3: Cross multiply
    1,582.65x = 2,371.64 × 1,409.65
  4. Step 4: Simplify right side
    1,582.65x = 3,343,169.35
  5. Step 5: Solve for x
    x = 3,343,169.35/1,582.65
  6. Step 6: Final answer
    x = 2,112.39

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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.