Home / 4,213.07-6,319.60-1,290.99

Finding the Fourth Proportional to 4,213.07, 6,319.60 and 1,290.99

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Solution

The fourth proportional to 4,213.07, 6,319.60 and 1,290.99 is: 1,936.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,213.07 : 6,319.60 = 1,290.99 : x
  2. Step 2: Convert to fraction form
    4,213.07/6,319.60 = 1,290.99/x
  3. Step 3: Cross multiply
    4,213.07x = 6,319.60 × 1,290.99
  4. Step 4: Simplify right side
    4,213.07x = 8,158,565.72
  5. Step 5: Solve for x
    x = 8,158,565.72/4,213.07
  6. Step 6: Final answer
    x = 1,936.49

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Double scale
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Similar ratio
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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.