Home / 1,708.19-2,356.00-1,288.61

Finding the Fourth Proportional to 1,708.19, 2,356.00 and 1,288.61

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Solution

The fourth proportional to 1,708.19, 2,356.00 and 1,288.61 is: 1,777.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,708.19 : 2,356.00 = 1,288.61 : x
  2. Step 2: Convert to fraction form
    1,708.19/2,356.00 = 1,288.61/x
  3. Step 3: Cross multiply
    1,708.19x = 2,356.00 × 1,288.61
  4. Step 4: Simplify right side
    1,708.19x = 3,035,967.83
  5. Step 5: Solve for x
    x = 3,035,967.83/1,708.19
  6. Step 6: Final answer
    x = 1,777.30

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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.