Home / 1,945.53-2,683.80-1,315.23

Finding the Fourth Proportional to 1,945.53, 2,683.80 and 1,315.23

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Solution

The fourth proportional to 1,945.53, 2,683.80 and 1,315.23 is: 1,814.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.53 : 2,683.80 = 1,315.23 : x
  2. Step 2: Convert to fraction form
    1,945.53/2,683.80 = 1,315.23/x
  3. Step 3: Cross multiply
    1,945.53x = 2,683.80 × 1,315.23
  4. Step 4: Simplify right side
    1,945.53x = 3,529,814.27
  5. Step 5: Solve for x
    x = 3,529,814.27/1,945.53
  6. Step 6: Final answer
    x = 1,814.32

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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.