Home / 1,905.21-2,629.16-1,077.21

Finding the Fourth Proportional to 1,905.21, 2,629.16 and 1,077.21

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Solution

The fourth proportional to 1,905.21, 2,629.16 and 1,077.21 is: 1,486.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.21 : 2,629.16 = 1,077.21 : x
  2. Step 2: Convert to fraction form
    1,905.21/2,629.16 = 1,077.21/x
  3. Step 3: Cross multiply
    1,905.21x = 2,629.16 × 1,077.21
  4. Step 4: Simplify right side
    1,905.21x = 2,832,152.06
  5. Step 5: Solve for x
    x = 2,832,152.06/1,905.21
  6. Step 6: Final answer
    x = 1,486.53

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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.