Home / 1,812.45-2,503.38-1,314.30

Finding the Fourth Proportional to 1,812.45, 2,503.38 and 1,314.30

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Solution

The fourth proportional to 1,812.45, 2,503.38 and 1,314.30 is: 1,815.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.45 : 2,503.38 = 1,314.30 : x
  2. Step 2: Convert to fraction form
    1,812.45/2,503.38 = 1,314.30/x
  3. Step 3: Cross multiply
    1,812.45x = 2,503.38 × 1,314.30
  4. Step 4: Simplify right side
    1,812.45x = 3,290,192.33
  5. Step 5: Solve for x
    x = 3,290,192.33/1,812.45
  6. Step 6: Final answer
    x = 1,815.33

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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.