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Finding the Fourth Proportional to 2,900.81, 4,351.32 and 953.17

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Solution

The fourth proportional to 2,900.81, 4,351.32 and 953.17 is: 1,429.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,900.81 : 4,351.32 = 953.17 : x
  2. Step 2: Convert to fraction form
    2,900.81/4,351.32 = 953.17/x
  3. Step 3: Cross multiply
    2,900.81x = 4,351.32 × 953.17
  4. Step 4: Simplify right side
    2,900.81x = 4,147,536.81
  5. Step 5: Solve for x
    x = 4,147,536.81/2,900.81
  6. Step 6: Final answer
    x = 1,429.78

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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.