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Finding the Fourth Proportional to 6,898.88, 9,520.66 and 4,885.90

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Solution

The fourth proportional to 6,898.88, 9,520.66 and 4,885.90 is: 6,742.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,898.88 : 9,520.66 = 4,885.90 : x
  2. Step 2: Convert to fraction form
    6,898.88/9,520.66 = 4,885.90/x
  3. Step 3: Cross multiply
    6,898.88x = 9,520.66 × 4,885.90
  4. Step 4: Simplify right side
    6,898.88x = 46,516,993.09
  5. Step 5: Solve for x
    x = 46,516,993.09/6,898.88
  6. Step 6: Final answer
    x = 6,742.68

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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.