Home / 1,831.68-2,525.76-1,209.60

Finding the Fourth Proportional to 1,831.68, 2,525.76 and 1,209.60

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Solution

The fourth proportional to 1,831.68, 2,525.76 and 1,209.60 is: 1,667.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,831.68 : 2,525.76 = 1,209.60 : x
  2. Step 2: Convert to fraction form
    1,831.68/2,525.76 = 1,209.60/x
  3. Step 3: Cross multiply
    1,831.68x = 2,525.76 × 1,209.60
  4. Step 4: Simplify right side
    1,831.68x = 3,055,159.30
  5. Step 5: Solve for x
    x = 3,055,159.30/1,831.68
  6. Step 6: Final answer
    x = 1,667.95

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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.