Home / 2,770.14-4,152.12-1,287.84

Finding the Fourth Proportional to 2,770.14, 4,152.12 and 1,287.84

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Solution

The fourth proportional to 2,770.14, 4,152.12 and 1,287.84 is: 1,930.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.14 : 4,152.12 = 1,287.84 : x
  2. Step 2: Convert to fraction form
    2,770.14/4,152.12 = 1,287.84/x
  3. Step 3: Cross multiply
    2,770.14x = 4,152.12 × 1,287.84
  4. Step 4: Simplify right side
    2,770.14x = 5,347,266.22
  5. Step 5: Solve for x
    x = 5,347,266.22/2,770.14
  6. Step 6: Final answer
    x = 1,930.32

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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.