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Finding the Fourth Proportional to 7,011.78, 10,517.70 and 1,817.70

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Solution

The fourth proportional to 7,011.78, 10,517.70 and 1,817.70 is: 2,726.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,011.78 : 10,517.70 = 1,817.70 : x
  2. Step 2: Convert to fraction form
    7,011.78/10,517.70 = 1,817.70/x
  3. Step 3: Cross multiply
    7,011.78x = 10,517.70 × 1,817.70
  4. Step 4: Simplify right side
    7,011.78x = 19,118,023.29
  5. Step 5: Solve for x
    x = 19,118,023.29/7,011.78
  6. Step 6: Final answer
    x = 2,726.56

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1.5x scale

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.