Home / 1,708.87-2,358.35-1,288.48

Finding the Fourth Proportional to 1,708.87, 2,358.35 and 1,288.48

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Solution

The fourth proportional to 1,708.87, 2,358.35 and 1,288.48 is: 1,778.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,708.87 : 2,358.35 = 1,288.48 : x
  2. Step 2: Convert to fraction form
    1,708.87/2,358.35 = 1,288.48/x
  3. Step 3: Cross multiply
    1,708.87x = 2,358.35 × 1,288.48
  4. Step 4: Simplify right side
    1,708.87x = 3,038,668.57
  5. Step 5: Solve for x
    x = 3,038,668.57/1,708.87
  6. Step 6: Final answer
    x = 1,778.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.