Home / 1,460.19-2,190.90-811.38

Finding the Fourth Proportional to 1,460.19, 2,190.90 and 811.38

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Solution

The fourth proportional to 1,460.19, 2,190.90 and 811.38 is: 1,217.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,460.19 : 2,190.90 = 811.38 : x
  2. Step 2: Convert to fraction form
    1,460.19/2,190.90 = 811.38/x
  3. Step 3: Cross multiply
    1,460.19x = 2,190.90 × 811.38
  4. Step 4: Simplify right side
    1,460.19x = 1,777,652.44
  5. Step 5: Solve for x
    x = 1,777,652.44/1,460.19
  6. Step 6: Final answer
    x = 1,217.41

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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.