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Finding the Fourth Proportional to 2,606.77, 3,911.66 and 964.45

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Solution

The fourth proportional to 2,606.77, 3,911.66 and 964.45 is: 1,447.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,606.77 : 3,911.66 = 964.45 : x
  2. Step 2: Convert to fraction form
    2,606.77/3,911.66 = 964.45/x
  3. Step 3: Cross multiply
    2,606.77x = 3,911.66 × 964.45
  4. Step 4: Simplify right side
    2,606.77x = 3,772,589.50
  5. Step 5: Solve for x
    x = 3,772,589.50/2,606.77
  6. Step 6: Final answer
    x = 1,447.23

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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.