Home / 1,880.14-2,814.30-1,291.70

Finding the Fourth Proportional to 1,880.14, 2,814.30 and 1,291.70

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Solution

The fourth proportional to 1,880.14, 2,814.30 and 1,291.70 is: 1,933.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,880.14 : 2,814.30 = 1,291.70 : x
  2. Step 2: Convert to fraction form
    1,880.14/2,814.30 = 1,291.70/x
  3. Step 3: Cross multiply
    1,880.14x = 2,814.30 × 1,291.70
  4. Step 4: Simplify right side
    1,880.14x = 3,635,231.31
  5. Step 5: Solve for x
    x = 3,635,231.31/1,880.14
  6. Step 6: Final answer
    x = 1,933.49

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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.