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Finding the Fourth Proportional to 7,294.79, 10,868.74 and 6,817.40

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Solution

The fourth proportional to 7,294.79, 10,868.74 and 6,817.40 is: 10,157.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,294.79 : 10,868.74 = 6,817.40 : x
  2. Step 2: Convert to fraction form
    7,294.79/10,868.74 = 6,817.40/x
  3. Step 3: Cross multiply
    7,294.79x = 10,868.74 × 6,817.40
  4. Step 4: Simplify right side
    7,294.79x = 74,096,493.73
  5. Step 5: Solve for x
    x = 74,096,493.73/7,294.79
  6. Step 6: Final answer
    x = 10,157.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.