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Finding the Fourth Proportional to 2,965.61, 4,448.90 and 913.13

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Solution

The fourth proportional to 2,965.61, 4,448.90 and 913.13 is: 1,369.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,965.61 : 4,448.90 = 913.13 : x
  2. Step 2: Convert to fraction form
    2,965.61/4,448.90 = 913.13/x
  3. Step 3: Cross multiply
    2,965.61x = 4,448.90 × 913.13
  4. Step 4: Simplify right side
    2,965.61x = 4,062,397.25
  5. Step 5: Solve for x
    x = 4,062,397.25/2,965.61
  6. Step 6: Final answer
    x = 1,369.84

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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.