Home / 1,971.42-2,720.57-1,185.62

Finding the Fourth Proportional to 1,971.42, 2,720.57 and 1,185.62

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Solution

The fourth proportional to 1,971.42, 2,720.57 and 1,185.62 is: 1,636.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.42 : 2,720.57 = 1,185.62 : x
  2. Step 2: Convert to fraction form
    1,971.42/2,720.57 = 1,185.62/x
  3. Step 3: Cross multiply
    1,971.42x = 2,720.57 × 1,185.62
  4. Step 4: Simplify right side
    1,971.42x = 3,225,564.64
  5. Step 5: Solve for x
    x = 3,225,564.64/1,971.42
  6. Step 6: Final answer
    x = 1,636.16

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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.