Home / 6,216.48-8,578.80-3,422.08

Finding the Fourth Proportional to 6,216.48, 8,578.80 and 3,422.08

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Solution

The fourth proportional to 6,216.48, 8,578.80 and 3,422.08 is: 4,722.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,216.48 : 8,578.80 = 3,422.08 : x
  2. Step 2: Convert to fraction form
    6,216.48/8,578.80 = 3,422.08/x
  3. Step 3: Cross multiply
    6,216.48x = 8,578.80 × 3,422.08
  4. Step 4: Simplify right side
    6,216.48x = 29,357,339.90
  5. Step 5: Solve for x
    x = 29,357,339.90/6,216.48
  6. Step 6: Final answer
    x = 4,722.50

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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.