Home / 2,518.49-3,475.21-1,399.28

Finding the Fourth Proportional to 2,518.49, 3,475.21 and 1,399.28

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Solution

The fourth proportional to 2,518.49, 3,475.21 and 1,399.28 is: 1,930.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,518.49 : 3,475.21 = 1,399.28 : x
  2. Step 2: Convert to fraction form
    2,518.49/3,475.21 = 1,399.28/x
  3. Step 3: Cross multiply
    2,518.49x = 3,475.21 × 1,399.28
  4. Step 4: Simplify right side
    2,518.49x = 4,862,784.85
  5. Step 5: Solve for x
    x = 4,862,784.85/2,518.49
  6. Step 6: Final answer
    x = 1,930.84

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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.