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Finding the Fourth Proportional to 3,145.56, 4,717.68 and 953.64

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Solution

The fourth proportional to 3,145.56, 4,717.68 and 953.64 is: 1,430.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.56 : 4,717.68 = 953.64 : x
  2. Step 2: Convert to fraction form
    3,145.56/4,717.68 = 953.64/x
  3. Step 3: Cross multiply
    3,145.56x = 4,717.68 × 953.64
  4. Step 4: Simplify right side
    3,145.56x = 4,498,968.36
  5. Step 5: Solve for x
    x = 4,498,968.36/3,145.56
  6. Step 6: Final answer
    x = 1,430.26

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1.5x scale

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.