Home / 1,670.16-2,305.30-1,006.88

Finding the Fourth Proportional to 1,670.16, 2,305.30 and 1,006.88

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Solution

The fourth proportional to 1,670.16, 2,305.30 and 1,006.88 is: 1,389.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,670.16 : 2,305.30 = 1,006.88 : x
  2. Step 2: Convert to fraction form
    1,670.16/2,305.30 = 1,006.88/x
  3. Step 3: Cross multiply
    1,670.16x = 2,305.30 × 1,006.88
  4. Step 4: Simplify right side
    1,670.16x = 2,321,160.46
  5. Step 5: Solve for x
    x = 2,321,160.46/1,670.16
  6. Step 6: Final answer
    x = 1,389.78

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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.