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Finding the Fourth Proportional to 5,114.40, 7,672.80 and 1,651.68

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Solution

The fourth proportional to 5,114.40, 7,672.80 and 1,651.68 is: 2,477.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,114.40 : 7,672.80 = 1,651.68 : x
  2. Step 2: Convert to fraction form
    5,114.40/7,672.80 = 1,651.68/x
  3. Step 3: Cross multiply
    5,114.40x = 7,672.80 × 1,651.68
  4. Step 4: Simplify right side
    5,114.40x = 12,673,010.30
  5. Step 5: Solve for x
    x = 12,673,010.30/5,114.40
  6. Step 6: Final answer
    x = 2,477.91

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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.