Home / 2,268.84-3,130.92-1,386.12

Finding the Fourth Proportional to 2,268.84, 3,130.92 and 1,386.12

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Solution

The fourth proportional to 2,268.84, 3,130.92 and 1,386.12 is: 1,912.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,268.84 : 3,130.92 = 1,386.12 : x
  2. Step 2: Convert to fraction form
    2,268.84/3,130.92 = 1,386.12/x
  3. Step 3: Cross multiply
    2,268.84x = 3,130.92 × 1,386.12
  4. Step 4: Simplify right side
    2,268.84x = 4,339,830.83
  5. Step 5: Solve for x
    x = 4,339,830.83/2,268.84
  6. Step 6: Final answer
    x = 1,912.80

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1.5x scale

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.