Home / 1,571.26-2,172.42-1,502.40

Finding the Fourth Proportional to 1,571.26, 2,172.42 and 1,502.40

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Solution

The fourth proportional to 1,571.26, 2,172.42 and 1,502.40 is: 2,077.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.26 : 2,172.42 = 1,502.40 : x
  2. Step 2: Convert to fraction form
    1,571.26/2,172.42 = 1,502.40/x
  3. Step 3: Cross multiply
    1,571.26x = 2,172.42 × 1,502.40
  4. Step 4: Simplify right side
    1,571.26x = 3,263,843.81
  5. Step 5: Solve for x
    x = 3,263,843.81/1,571.26
  6. Step 6: Final answer
    x = 2,077.21

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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.