Home / 4,911.32-6,777.12-2,815.76

Finding the Fourth Proportional to 4,911.32, 6,777.12 and 2,815.76

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Solution

The fourth proportional to 4,911.32, 6,777.12 and 2,815.76 is: 3,885.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,911.32 : 6,777.12 = 2,815.76 : x
  2. Step 2: Convert to fraction form
    4,911.32/6,777.12 = 2,815.76/x
  3. Step 3: Cross multiply
    4,911.32x = 6,777.12 × 2,815.76
  4. Step 4: Simplify right side
    4,911.32x = 19,082,743.41
  5. Step 5: Solve for x
    x = 19,082,743.41/4,911.32
  6. Step 6: Final answer
    x = 3,885.46

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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.