Home / 1,983.12-2,975.68-1,291.14

Finding the Fourth Proportional to 1,983.12, 2,975.68 and 1,291.14

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Solution

The fourth proportional to 1,983.12, 2,975.68 and 1,291.14 is: 1,937.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983.12 : 2,975.68 = 1,291.14 : x
  2. Step 2: Convert to fraction form
    1,983.12/2,975.68 = 1,291.14/x
  3. Step 3: Cross multiply
    1,983.12x = 2,975.68 × 1,291.14
  4. Step 4: Simplify right side
    1,983.12x = 3,842,019.48
  5. Step 5: Solve for x
    x = 3,842,019.48/1,983.12
  6. Step 6: Final answer
    x = 1,937.36

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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.