Home / 1,718.40-2,581.20-1,657.20

Finding the Fourth Proportional to 1,718.40, 2,581.20 and 1,657.20

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Solution

The fourth proportional to 1,718.40, 2,581.20 and 1,657.20 is: 2,489.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,718.40 : 2,581.20 = 1,657.20 : x
  2. Step 2: Convert to fraction form
    1,718.40/2,581.20 = 1,657.20/x
  3. Step 3: Cross multiply
    1,718.40x = 2,581.20 × 1,657.20
  4. Step 4: Simplify right side
    1,718.40x = 4,277,564.64
  5. Step 5: Solve for x
    x = 4,277,564.64/1,718.40
  6. Step 6: Final answer
    x = 2,489.27

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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.