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Finding the Fourth Proportional to 6,877.10, 9,640.90 and 6,877.10

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Solution

The fourth proportional to 6,877.10, 9,640.90 and 6,877.10 is: 9,640.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,877.10 : 9,640.90 = 6,877.10 : x
  2. Step 2: Convert to fraction form
    6,877.10/9,640.90 = 6,877.10/x
  3. Step 3: Cross multiply
    6,877.10x = 9,640.90 × 6,877.10
  4. Step 4: Simplify right side
    6,877.10x = 66,301,433.39
  5. Step 5: Solve for x
    x = 66,301,433.39/6,877.10
  6. Step 6: Final answer
    x = 9,640.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.