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Finding the Fourth Proportional to 6,216.36, 8,574.28 and 5,278.40

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Solution

The fourth proportional to 6,216.36, 8,574.28 and 5,278.40 is: 7,280.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,216.36 : 8,574.28 = 5,278.40 : x
  2. Step 2: Convert to fraction form
    6,216.36/8,574.28 = 5,278.40/x
  3. Step 3: Cross multiply
    6,216.36x = 8,574.28 × 5,278.40
  4. Step 4: Simplify right side
    6,216.36x = 45,258,479.55
  5. Step 5: Solve for x
    x = 45,258,479.55/6,216.36
  6. Step 6: Final answer
    x = 7,280.54

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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.