Home / 1,729.10-2,587.95-1,664.85

Finding the Fourth Proportional to 1,729.10, 2,587.95 and 1,664.85

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Solution

The fourth proportional to 1,729.10, 2,587.95 and 1,664.85 is: 2,491.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729.10 : 2,587.95 = 1,664.85 : x
  2. Step 2: Convert to fraction form
    1,729.10/2,587.95 = 1,664.85/x
  3. Step 3: Cross multiply
    1,729.10x = 2,587.95 × 1,664.85
  4. Step 4: Simplify right side
    1,729.10x = 4,308,558.26
  5. Step 5: Solve for x
    x = 4,308,558.26/1,729.10
  6. Step 6: Final answer
    x = 2,491.80

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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.