Home / 10,278.79-15,419.27-3,259.80

Finding the Fourth Proportional to 10,278.79, 15,419.27 and 3,259.80

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Solution

The fourth proportional to 10,278.79, 15,419.27 and 3,259.80 is: 4,890.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,278.79 : 15,419.27 = 3,259.80 : x
  2. Step 2: Convert to fraction form
    10,278.79/15,419.27 = 3,259.80/x
  3. Step 3: Cross multiply
    10,278.79x = 15,419.27 × 3,259.80
  4. Step 4: Simplify right side
    10,278.79x = 50,263,744.50
  5. Step 5: Solve for x
    x = 50,263,744.50/10,278.79
  6. Step 6: Final answer
    x = 4,890.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.