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Finding the Fourth Proportional to 2,370.64, 3,555.64 and 1,216.40

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Solution

The fourth proportional to 2,370.64, 3,555.64 and 1,216.40 is: 1,824.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,370.64 : 3,555.64 = 1,216.40 : x
  2. Step 2: Convert to fraction form
    2,370.64/3,555.64 = 1,216.40/x
  3. Step 3: Cross multiply
    2,370.64x = 3,555.64 × 1,216.40
  4. Step 4: Simplify right side
    2,370.64x = 4,325,080.50
  5. Step 5: Solve for x
    x = 4,325,080.50/2,370.64
  6. Step 6: Final answer
    x = 1,824.44

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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.