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Finding the Fourth Proportional to 5,386.72, 7,433.04 and 3,028.72

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Solution

The fourth proportional to 5,386.72, 7,433.04 and 3,028.72 is: 4,179.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,386.72 : 7,433.04 = 3,028.72 : x
  2. Step 2: Convert to fraction form
    5,386.72/7,433.04 = 3,028.72/x
  3. Step 3: Cross multiply
    5,386.72x = 7,433.04 × 3,028.72
  4. Step 4: Simplify right side
    5,386.72x = 22,512,596.91
  5. Step 5: Solve for x
    x = 22,512,596.91/5,386.72
  6. Step 6: Final answer
    x = 4,179.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.