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Finding the Fourth Proportional to 5,174.68, 7,762.16 and 1,890.22

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Solution

The fourth proportional to 5,174.68, 7,762.16 and 1,890.22 is: 2,835.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,174.68 : 7,762.16 = 1,890.22 : x
  2. Step 2: Convert to fraction form
    5,174.68/7,762.16 = 1,890.22/x
  3. Step 3: Cross multiply
    5,174.68x = 7,762.16 × 1,890.22
  4. Step 4: Simplify right side
    5,174.68x = 14,672,190.08
  5. Step 5: Solve for x
    x = 14,672,190.08/5,174.68
  6. Step 6: Final answer
    x = 2,835.38

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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.