Home / 3,519-5,280.39-1,787.76

Finding the Fourth Proportional to 3,519, 5,280.39 and 1,787.76

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Solution

The fourth proportional to 3,519, 5,280.39 and 1,787.76 is: 2,682.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,519 : 5,280.39 = 1,787.76 : x
  2. Step 2: Convert to fraction form
    3,519/5,280.39 = 1,787.76/x
  3. Step 3: Cross multiply
    3,519x = 5,280.39 × 1,787.76
  4. Step 4: Simplify right side
    3,519x = 9,440,070.03
  5. Step 5: Solve for x
    x = 9,440,070.03/3,519
  6. Step 6: Final answer
    x = 2,682.60

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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.