Home / 2,639.48-3,642.03-1,645.07

Finding the Fourth Proportional to 2,639.48, 3,642.03 and 1,645.07

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Solution

The fourth proportional to 2,639.48, 3,642.03 and 1,645.07 is: 2,269.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.48 : 3,642.03 = 1,645.07 : x
  2. Step 2: Convert to fraction form
    2,639.48/3,642.03 = 1,645.07/x
  3. Step 3: Cross multiply
    2,639.48x = 3,642.03 × 1,645.07
  4. Step 4: Simplify right side
    2,639.48x = 5,991,376.08
  5. Step 5: Solve for x
    x = 5,991,376.08/2,639.48
  6. Step 6: Final answer
    x = 2,269.91

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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.