Home / 1,905.63-2,630.84-1,439.07

Finding the Fourth Proportional to 1,905.63, 2,630.84 and 1,439.07

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Solution

The fourth proportional to 1,905.63, 2,630.84 and 1,439.07 is: 1,986.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.63 : 2,630.84 = 1,439.07 : x
  2. Step 2: Convert to fraction form
    1,905.63/2,630.84 = 1,439.07/x
  3. Step 3: Cross multiply
    1,905.63x = 2,630.84 × 1,439.07
  4. Step 4: Simplify right side
    1,905.63x = 3,785,962.92
  5. Step 5: Solve for x
    x = 3,785,962.92/1,905.63
  6. Step 6: Final answer
    x = 1,986.73

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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.