Home / 2,268.20-3,130.34-1,384.89

Finding the Fourth Proportional to 2,268.20, 3,130.34 and 1,384.89

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Solution

The fourth proportional to 2,268.20, 3,130.34 and 1,384.89 is: 1,911.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,268.20 : 3,130.34 = 1,384.89 : x
  2. Step 2: Convert to fraction form
    2,268.20/3,130.34 = 1,384.89/x
  3. Step 3: Cross multiply
    2,268.20x = 3,130.34 × 1,384.89
  4. Step 4: Simplify right side
    2,268.20x = 4,335,176.56
  5. Step 5: Solve for x
    x = 4,335,176.56/2,268.20
  6. Step 6: Final answer
    x = 1,911.28

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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.