Home / 4,911.42-6,777.60-2,787.12

Finding the Fourth Proportional to 4,911.42, 6,777.60 and 2,787.12

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Solution

The fourth proportional to 4,911.42, 6,777.60 and 2,787.12 is: 3,846.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,911.42 : 6,777.60 = 2,787.12 : x
  2. Step 2: Convert to fraction form
    4,911.42/6,777.60 = 2,787.12/x
  3. Step 3: Cross multiply
    4,911.42x = 6,777.60 × 2,787.12
  4. Step 4: Simplify right side
    4,911.42x = 18,889,984.51
  5. Step 5: Solve for x
    x = 18,889,984.51/4,911.42
  6. Step 6: Final answer
    x = 3,846.14

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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.