Home / 1,512.13-2,268.39-646.64

Finding the Fourth Proportional to 1,512.13, 2,268.39 and 646.64

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Solution

The fourth proportional to 1,512.13, 2,268.39 and 646.64 is: 970.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,512.13 : 2,268.39 = 646.64 : x
  2. Step 2: Convert to fraction form
    1,512.13/2,268.39 = 646.64/x
  3. Step 3: Cross multiply
    1,512.13x = 2,268.39 × 646.64
  4. Step 4: Simplify right side
    1,512.13x = 1,466,831.71
  5. Step 5: Solve for x
    x = 1,466,831.71/1,512.13
  6. Step 6: Final answer
    x = 970.04

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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.