Home / 2,487.60-3,727.80-1,717.20

Finding the Fourth Proportional to 2,487.60, 3,727.80 and 1,717.20

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Solution

The fourth proportional to 2,487.60, 3,727.80 and 1,717.20 is: 2,573.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,487.60 : 3,727.80 = 1,717.20 : x
  2. Step 2: Convert to fraction form
    2,487.60/3,727.80 = 1,717.20/x
  3. Step 3: Cross multiply
    2,487.60x = 3,727.80 × 1,717.20
  4. Step 4: Simplify right side
    2,487.60x = 6,401,378.16
  5. Step 5: Solve for x
    x = 6,401,378.16/2,487.60
  6. Step 6: Final answer
    x = 2,573.31

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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.