Home / 1,511.24-2,085.46-839.03

Finding the Fourth Proportional to 1,511.24, 2,085.46 and 839.03

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Solution

The fourth proportional to 1,511.24, 2,085.46 and 839.03 is: 1,157.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.24 : 2,085.46 = 839.03 : x
  2. Step 2: Convert to fraction form
    1,511.24/2,085.46 = 839.03/x
  3. Step 3: Cross multiply
    1,511.24x = 2,085.46 × 839.03
  4. Step 4: Simplify right side
    1,511.24x = 1,749,750.98
  5. Step 5: Solve for x
    x = 1,749,750.98/1,511.24
  6. Step 6: Final answer
    x = 1,157.83

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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.