Home / 4,787.61-7,181.76-1,277.60

Finding the Fourth Proportional to 4,787.61, 7,181.76 and 1,277.60

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Solution

The fourth proportional to 4,787.61, 7,181.76 and 1,277.60 is: 1,916.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,787.61 : 7,181.76 = 1,277.60 : x
  2. Step 2: Convert to fraction form
    4,787.61/7,181.76 = 1,277.60/x
  3. Step 3: Cross multiply
    4,787.61x = 7,181.76 × 1,277.60
  4. Step 4: Simplify right side
    4,787.61x = 9,175,380.67
  5. Step 5: Solve for x
    x = 9,175,380.67/4,787.61
  6. Step 6: Final answer
    x = 1,916.48

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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.