Home / 2,271.40-3,136.26-1,574.80

Finding the Fourth Proportional to 2,271.40, 3,136.26 and 1,574.80

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Solution

The fourth proportional to 2,271.40, 3,136.26 and 1,574.80 is: 2,174.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,271.40 : 3,136.26 = 1,574.80 : x
  2. Step 2: Convert to fraction form
    2,271.40/3,136.26 = 1,574.80/x
  3. Step 3: Cross multiply
    2,271.40x = 3,136.26 × 1,574.80
  4. Step 4: Simplify right side
    2,271.40x = 4,938,982.25
  5. Step 5: Solve for x
    x = 4,938,982.25/2,271.40
  6. Step 6: Final answer
    x = 2,174.42

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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.