Home / 1,392.36-2,086.49-1,314.45

Finding the Fourth Proportional to 1,392.36, 2,086.49 and 1,314.45

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Solution

The fourth proportional to 1,392.36, 2,086.49 and 1,314.45 is: 1,969.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392.36 : 2,086.49 = 1,314.45 : x
  2. Step 2: Convert to fraction form
    1,392.36/2,086.49 = 1,314.45/x
  3. Step 3: Cross multiply
    1,392.36x = 2,086.49 × 1,314.45
  4. Step 4: Simplify right side
    1,392.36x = 2,742,580.21
  5. Step 5: Solve for x
    x = 2,742,580.21/1,392.36
  6. Step 6: Final answer
    x = 1,969.73

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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.