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Finding the Fourth Proportional to 4,691.90, 7,039.48 and 1,770.50

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Solution

The fourth proportional to 4,691.90, 7,039.48 and 1,770.50 is: 2,656.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,691.90 : 7,039.48 = 1,770.50 : x
  2. Step 2: Convert to fraction form
    4,691.90/7,039.48 = 1,770.50/x
  3. Step 3: Cross multiply
    4,691.90x = 7,039.48 × 1,770.50
  4. Step 4: Simplify right side
    4,691.90x = 12,463,399.34
  5. Step 5: Solve for x
    x = 12,463,399.34/4,691.90
  6. Step 6: Final answer
    x = 2,656.37

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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.