Home / 1,639.08-2,267.91-1,429.74

Finding the Fourth Proportional to 1,639.08, 2,267.91 and 1,429.74

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Solution

The fourth proportional to 1,639.08, 2,267.91 and 1,429.74 is: 1,978.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.08 : 2,267.91 = 1,429.74 : x
  2. Step 2: Convert to fraction form
    1,639.08/2,267.91 = 1,429.74/x
  3. Step 3: Cross multiply
    1,639.08x = 2,267.91 × 1,429.74
  4. Step 4: Simplify right side
    1,639.08x = 3,242,521.64
  5. Step 5: Solve for x
    x = 3,242,521.64/1,639.08
  6. Step 6: Final answer
    x = 1,978.26

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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.