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Finding the Fourth Proportional to 3,142.64, 4,715.95 and 1,756.89

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Solution

The fourth proportional to 3,142.64, 4,715.95 and 1,756.89 is: 2,636.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,142.64 : 4,715.95 = 1,756.89 : x
  2. Step 2: Convert to fraction form
    3,142.64/4,715.95 = 1,756.89/x
  3. Step 3: Cross multiply
    3,142.64x = 4,715.95 × 1,756.89
  4. Step 4: Simplify right side
    3,142.64x = 8,285,379.46
  5. Step 5: Solve for x
    x = 8,285,379.46/3,142.64
  6. Step 6: Final answer
    x = 2,636.44

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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.