Home / 2,675.23-4,012.23-1,287.86

Finding the Fourth Proportional to 2,675.23, 4,012.23 and 1,287.86

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Solution

The fourth proportional to 2,675.23, 4,012.23 and 1,287.86 is: 1,931.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,675.23 : 4,012.23 = 1,287.86 : x
  2. Step 2: Convert to fraction form
    2,675.23/4,012.23 = 1,287.86/x
  3. Step 3: Cross multiply
    2,675.23x = 4,012.23 × 1,287.86
  4. Step 4: Simplify right side
    2,675.23x = 5,167,170.47
  5. Step 5: Solve for x
    x = 5,167,170.47/2,675.23
  6. Step 6: Final answer
    x = 1,931.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.