Home / 4,280.85-6,419.75-1,815.84

Finding the Fourth Proportional to 4,280.85, 6,419.75 and 1,815.84

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Solution

The fourth proportional to 4,280.85, 6,419.75 and 1,815.84 is: 2,723.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,280.85 : 6,419.75 = 1,815.84 : x
  2. Step 2: Convert to fraction form
    4,280.85/6,419.75 = 1,815.84/x
  3. Step 3: Cross multiply
    4,280.85x = 6,419.75 × 1,815.84
  4. Step 4: Simplify right side
    4,280.85x = 11,657,229.76
  5. Step 5: Solve for x
    x = 11,657,229.76/4,280.85
  6. Step 6: Final answer
    x = 2,723.11

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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.