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Finding the Fourth Proportional to 3,161.22, 4,741.86 and 970.08

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Solution

The fourth proportional to 3,161.22, 4,741.86 and 970.08 is: 1,455.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.22 : 4,741.86 = 970.08 : x
  2. Step 2: Convert to fraction form
    3,161.22/4,741.86 = 970.08/x
  3. Step 3: Cross multiply
    3,161.22x = 4,741.86 × 970.08
  4. Step 4: Simplify right side
    3,161.22x = 4,599,983.55
  5. Step 5: Solve for x
    x = 4,599,983.55/3,161.22
  6. Step 6: Final answer
    x = 1,455.13

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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.