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Finding the Fourth Proportional to 2,965.60, 4,089.04 and 2,255.64

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Solution

The fourth proportional to 2,965.60, 4,089.04 and 2,255.64 is: 3,110.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,965.60 : 4,089.04 = 2,255.64 : x
  2. Step 2: Convert to fraction form
    2,965.60/4,089.04 = 2,255.64/x
  3. Step 3: Cross multiply
    2,965.60x = 4,089.04 × 2,255.64
  4. Step 4: Simplify right side
    2,965.60x = 9,223,402.19
  5. Step 5: Solve for x
    x = 9,223,402.19/2,965.60
  6. Step 6: Final answer
    x = 3,110.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.