Home / 4,281.88-5,909.40-2,688.79

Finding the Fourth Proportional to 4,281.88, 5,909.40 and 2,688.79

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Solution

The fourth proportional to 4,281.88, 5,909.40 and 2,688.79 is: 3,710.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,281.88 : 5,909.40 = 2,688.79 : x
  2. Step 2: Convert to fraction form
    4,281.88/5,909.40 = 2,688.79/x
  3. Step 3: Cross multiply
    4,281.88x = 5,909.40 × 2,688.79
  4. Step 4: Simplify right side
    4,281.88x = 15,889,135.63
  5. Step 5: Solve for x
    x = 15,889,135.63/4,281.88
  6. Step 6: Final answer
    x = 3,710.78

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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.