Home / 1,717.60-2,581.80-1,685.20

Finding the Fourth Proportional to 1,717.60, 2,581.80 and 1,685.20

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Solution

The fourth proportional to 1,717.60, 2,581.80 and 1,685.20 is: 2,533.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,717.60 : 2,581.80 = 1,685.20 : x
  2. Step 2: Convert to fraction form
    1,717.60/2,581.80 = 1,685.20/x
  3. Step 3: Cross multiply
    1,717.60x = 2,581.80 × 1,685.20
  4. Step 4: Simplify right side
    1,717.60x = 4,350,849.36
  5. Step 5: Solve for x
    x = 4,350,849.36/1,717.60
  6. Step 6: Final answer
    x = 2,533.10

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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.