Home / 2,072.48-2,860.40-1,188.88

Finding the Fourth Proportional to 2,072.48, 2,860.40 and 1,188.88

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Solution

The fourth proportional to 2,072.48, 2,860.40 and 1,188.88 is: 1,640.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,072.48 : 2,860.40 = 1,188.88 : x
  2. Step 2: Convert to fraction form
    2,072.48/2,860.40 = 1,188.88/x
  3. Step 3: Cross multiply
    2,072.48x = 2,860.40 × 1,188.88
  4. Step 4: Simplify right side
    2,072.48x = 3,400,672.35
  5. Step 5: Solve for x
    x = 3,400,672.35/2,072.48
  6. Step 6: Final answer
    x = 1,640.87

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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.