Home / 2,639.79-3,962.93-1,669.95

Finding the Fourth Proportional to 2,639.79, 3,962.93 and 1,669.95

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Solution

The fourth proportional to 2,639.79, 3,962.93 and 1,669.95 is: 2,506.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.79 : 3,962.93 = 1,669.95 : x
  2. Step 2: Convert to fraction form
    2,639.79/3,962.93 = 1,669.95/x
  3. Step 3: Cross multiply
    2,639.79x = 3,962.93 × 1,669.95
  4. Step 4: Simplify right side
    2,639.79x = 6,617,886.60
  5. Step 5: Solve for x
    x = 6,617,886.60/2,639.79
  6. Step 6: Final answer
    x = 2,506.97

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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.