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Finding the Fourth Proportional to 4,885.66, 6,742.65 and 2,790.46

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Solution

The fourth proportional to 4,885.66, 6,742.65 and 2,790.46 is: 3,851.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,885.66 : 6,742.65 = 2,790.46 : x
  2. Step 2: Convert to fraction form
    4,885.66/6,742.65 = 2,790.46/x
  3. Step 3: Cross multiply
    4,885.66x = 6,742.65 × 2,790.46
  4. Step 4: Simplify right side
    4,885.66x = 18,815,095.12
  5. Step 5: Solve for x
    x = 18,815,095.12/4,885.66
  6. Step 6: Final answer
    x = 3,851.09

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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.