Home / 5,274.48-7,278.78-2,916.60

Finding the Fourth Proportional to 5,274.48, 7,278.78 and 2,916.60

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Solution

The fourth proportional to 5,274.48, 7,278.78 and 2,916.60 is: 4,024.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,274.48 : 7,278.78 = 2,916.60 : x
  2. Step 2: Convert to fraction form
    5,274.48/7,278.78 = 2,916.60/x
  3. Step 3: Cross multiply
    5,274.48x = 7,278.78 × 2,916.60
  4. Step 4: Simplify right side
    5,274.48x = 21,229,289.75
  5. Step 5: Solve for x
    x = 21,229,289.75/5,274.48
  6. Step 6: Final answer
    x = 4,024.91

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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.