Home / 3,781.30-5,670.60-1,316.20

Finding the Fourth Proportional to 3,781.30, 5,670.60 and 1,316.20

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Solution

The fourth proportional to 3,781.30, 5,670.60 and 1,316.20 is: 1,973.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.30 : 5,670.60 = 1,316.20 : x
  2. Step 2: Convert to fraction form
    3,781.30/5,670.60 = 1,316.20/x
  3. Step 3: Cross multiply
    3,781.30x = 5,670.60 × 1,316.20
  4. Step 4: Simplify right side
    3,781.30x = 7,463,643.72
  5. Step 5: Solve for x
    x = 7,463,643.72/3,781.30
  6. Step 6: Final answer
    x = 1,973.83

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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.