Home / 2,645.60-3,965.52-1,721.81

Finding the Fourth Proportional to 2,645.60, 3,965.52 and 1,721.81

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Solution

The fourth proportional to 2,645.60, 3,965.52 and 1,721.81 is: 2,580.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,645.60 : 3,965.52 = 1,721.81 : x
  2. Step 2: Convert to fraction form
    2,645.60/3,965.52 = 1,721.81/x
  3. Step 3: Cross multiply
    2,645.60x = 3,965.52 × 1,721.81
  4. Step 4: Simplify right side
    2,645.60x = 6,827,852.16
  5. Step 5: Solve for x
    x = 6,827,852.16/2,645.60
  6. Step 6: Final answer
    x = 2,580.84

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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.