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Finding the Fourth Proportional to 7,111.42, 9,813.03 and 4,126.68

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Solution

The fourth proportional to 7,111.42, 9,813.03 and 4,126.68 is: 5,694.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.42 : 9,813.03 = 4,126.68 : x
  2. Step 2: Convert to fraction form
    7,111.42/9,813.03 = 4,126.68/x
  3. Step 3: Cross multiply
    7,111.42x = 9,813.03 × 4,126.68
  4. Step 4: Simplify right side
    7,111.42x = 40,495,234.64
  5. Step 5: Solve for x
    x = 40,495,234.64/7,111.42
  6. Step 6: Final answer
    x = 5,694.40

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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.