Home / 1,905.91-2,630.12-1,066.64

Finding the Fourth Proportional to 1,905.91, 2,630.12 and 1,066.64

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Solution

The fourth proportional to 1,905.91, 2,630.12 and 1,066.64 is: 1,471.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.91 : 2,630.12 = 1,066.64 : x
  2. Step 2: Convert to fraction form
    1,905.91/2,630.12 = 1,066.64/x
  3. Step 3: Cross multiply
    1,905.91x = 2,630.12 × 1,066.64
  4. Step 4: Simplify right side
    1,905.91x = 2,805,372.71
  5. Step 5: Solve for x
    x = 2,805,372.71/1,905.91
  6. Step 6: Final answer
    x = 1,471.94

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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.