Home / 1,236.21-1,705.23-1,158.99

Finding the Fourth Proportional to 1,236.21, 1,705.23 and 1,158.99

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Solution

The fourth proportional to 1,236.21, 1,705.23 and 1,158.99 is: 1,598.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,236.21 : 1,705.23 = 1,158.99 : x
  2. Step 2: Convert to fraction form
    1,236.21/1,705.23 = 1,158.99/x
  3. Step 3: Cross multiply
    1,236.21x = 1,705.23 × 1,158.99
  4. Step 4: Simplify right side
    1,236.21x = 1,976,344.52
  5. Step 5: Solve for x
    x = 1,976,344.52/1,236.21
  6. Step 6: Final answer
    x = 1,598.71

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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.