Home / 1,314.20-1,812.30-1,019.36

Finding the Fourth Proportional to 1,314.20, 1,812.30 and 1,019.36

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Solution

The fourth proportional to 1,314.20, 1,812.30 and 1,019.36 is: 1,405.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314.20 : 1,812.30 = 1,019.36 : x
  2. Step 2: Convert to fraction form
    1,314.20/1,812.30 = 1,019.36/x
  3. Step 3: Cross multiply
    1,314.20x = 1,812.30 × 1,019.36
  4. Step 4: Simplify right side
    1,314.20x = 1,847,386.13
  5. Step 5: Solve for x
    x = 1,847,386.13/1,314.20
  6. Step 6: Final answer
    x = 1,405.71

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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.