Home / 1,986.66-2,741.58-1,147.35

Finding the Fourth Proportional to 1,986.66, 2,741.58 and 1,147.35

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Solution

The fourth proportional to 1,986.66, 2,741.58 and 1,147.35 is: 1,583.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.66 : 2,741.58 = 1,147.35 : x
  2. Step 2: Convert to fraction form
    1,986.66/2,741.58 = 1,147.35/x
  3. Step 3: Cross multiply
    1,986.66x = 2,741.58 × 1,147.35
  4. Step 4: Simplify right side
    1,986.66x = 3,145,551.81
  5. Step 5: Solve for x
    x = 3,145,551.81/1,986.66
  6. Step 6: Final answer
    x = 1,583.34

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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.