Home / 3,216.56-4,827-1,485.20

Finding the Fourth Proportional to 3,216.56, 4,827 and 1,485.20

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Solution

The fourth proportional to 3,216.56, 4,827 and 1,485.20 is: 2,228.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,216.56 : 4,827 = 1,485.20 : x
  2. Step 2: Convert to fraction form
    3,216.56/4,827 = 1,485.20/x
  3. Step 3: Cross multiply
    3,216.56x = 4,827 × 1,485.20
  4. Step 4: Simplify right side
    3,216.56x = 7,169,060.40
  5. Step 5: Solve for x
    x = 7,169,060.40/3,216.56
  6. Step 6: Final answer
    x = 2,228.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.