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Finding the Fourth Proportional to 5,274.48, 7,278.64 and 2,916.56

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Solution

The fourth proportional to 5,274.48, 7,278.64 and 2,916.56 is: 4,024.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,274.48 : 7,278.64 = 2,916.56 : x
  2. Step 2: Convert to fraction form
    5,274.48/7,278.64 = 2,916.56/x
  3. Step 3: Cross multiply
    5,274.48x = 7,278.64 × 2,916.56
  4. Step 4: Simplify right side
    5,274.48x = 21,228,590.28
  5. Step 5: Solve for x
    x = 21,228,590.28/5,274.48
  6. Step 6: Final answer
    x = 4,024.77

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