Home / 1,351.55-2,015.46-1,339.23

Finding the Fourth Proportional to 1,351.55, 2,015.46 and 1,339.23

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Solution

The fourth proportional to 1,351.55, 2,015.46 and 1,339.23 is: 1,997.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351.55 : 2,015.46 = 1,339.23 : x
  2. Step 2: Convert to fraction form
    1,351.55/2,015.46 = 1,339.23/x
  3. Step 3: Cross multiply
    1,351.55x = 2,015.46 × 1,339.23
  4. Step 4: Simplify right side
    1,351.55x = 2,699,164.50
  5. Step 5: Solve for x
    x = 2,699,164.50/1,351.55
  6. Step 6: Final answer
    x = 1,997.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.