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Finding the Fourth Proportional to 2,953.56, 4,430.16 and 1,103.88

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Solution

The fourth proportional to 2,953.56, 4,430.16 and 1,103.88 is: 1,655.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,953.56 : 4,430.16 = 1,103.88 : x
  2. Step 2: Convert to fraction form
    2,953.56/4,430.16 = 1,103.88/x
  3. Step 3: Cross multiply
    2,953.56x = 4,430.16 × 1,103.88
  4. Step 4: Simplify right side
    2,953.56x = 4,890,365.02
  5. Step 5: Solve for x
    x = 4,890,365.02/2,953.56
  6. Step 6: Final answer
    x = 1,655.75

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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.