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Finding the Fourth Proportional to 5,274.69, 7,278.21 and 2,916.38

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Solution

The fourth proportional to 5,274.69, 7,278.21 and 2,916.38 is: 4,024.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,274.69 : 7,278.21 = 2,916.38 : x
  2. Step 2: Convert to fraction form
    5,274.69/7,278.21 = 2,916.38/x
  3. Step 3: Cross multiply
    5,274.69x = 7,278.21 × 2,916.38
  4. Step 4: Simplify right side
    5,274.69x = 21,226,000.63
  5. Step 5: Solve for x
    x = 21,226,000.63/5,274.69
  6. Step 6: Final answer
    x = 4,024.12

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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.