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Finding the Fourth Proportional to 7,000.53, 10,500.89 and 1,806.40

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Solution

The fourth proportional to 7,000.53, 10,500.89 and 1,806.40 is: 2,709.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,000.53 : 10,500.89 = 1,806.40 : x
  2. Step 2: Convert to fraction form
    7,000.53/10,500.89 = 1,806.40/x
  3. Step 3: Cross multiply
    7,000.53x = 10,500.89 × 1,806.40
  4. Step 4: Simplify right side
    7,000.53x = 18,968,807.70
  5. Step 5: Solve for x
    x = 18,968,807.70/7,000.53
  6. Step 6: Final answer
    x = 2,709.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.