Home / 1,721.60-2,580.24-1,336.40

Finding the Fourth Proportional to 1,721.60, 2,580.24 and 1,336.40

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Solution

The fourth proportional to 1,721.60, 2,580.24 and 1,336.40 is: 2,002.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.60 : 2,580.24 = 1,336.40 : x
  2. Step 2: Convert to fraction form
    1,721.60/2,580.24 = 1,336.40/x
  3. Step 3: Cross multiply
    1,721.60x = 2,580.24 × 1,336.40
  4. Step 4: Simplify right side
    1,721.60x = 3,448,232.74
  5. Step 5: Solve for x
    x = 3,448,232.74/1,721.60
  6. Step 6: Final answer
    x = 2,002.92

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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.