Home / 4,911.30-6,777.55-2,815.38

Finding the Fourth Proportional to 4,911.30, 6,777.55 and 2,815.38

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Solution

The fourth proportional to 4,911.30, 6,777.55 and 2,815.38 is: 3,885.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,911.30 : 6,777.55 = 2,815.38 : x
  2. Step 2: Convert to fraction form
    4,911.30/6,777.55 = 2,815.38/x
  3. Step 3: Cross multiply
    4,911.30x = 6,777.55 × 2,815.38
  4. Step 4: Simplify right side
    4,911.30x = 19,081,378.72
  5. Step 5: Solve for x
    x = 19,081,378.72/4,911.30
  6. Step 6: Final answer
    x = 3,885.20

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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.