Home / 2,801.79-3,859.35-2,137.49

Finding the Fourth Proportional to 2,801.79, 3,859.35 and 2,137.49

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Solution

The fourth proportional to 2,801.79, 3,859.35 and 2,137.49 is: 2,944.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,801.79 : 3,859.35 = 2,137.49 : x
  2. Step 2: Convert to fraction form
    2,801.79/3,859.35 = 2,137.49/x
  3. Step 3: Cross multiply
    2,801.79x = 3,859.35 × 2,137.49
  4. Step 4: Simplify right side
    2,801.79x = 8,249,337.02
  5. Step 5: Solve for x
    x = 8,249,337.02/2,801.79
  6. Step 6: Final answer
    x = 2,944.31

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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.