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Finding the Fourth Proportional to 1,903.64, 2,627.20 and 1,513.64

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Solution

The fourth proportional to 1,903.64, 2,627.20 and 1,513.64 is: 2,088.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,903.64 : 2,627.20 = 1,513.64 : x
  2. Step 2: Convert to fraction form
    1,903.64/2,627.20 = 1,513.64/x
  3. Step 3: Cross multiply
    1,903.64x = 2,627.20 × 1,513.64
  4. Step 4: Simplify right side
    1,903.64x = 3,976,635.01
  5. Step 5: Solve for x
    x = 3,976,635.01/1,903.64
  6. Step 6: Final answer
    x = 2,088.96

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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.