Home / 1,670.28-2,305.32-1,007.16

Finding the Fourth Proportional to 1,670.28, 2,305.32 and 1,007.16

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Solution

The fourth proportional to 1,670.28, 2,305.32 and 1,007.16 is: 1,390.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,670.28 : 2,305.32 = 1,007.16 : x
  2. Step 2: Convert to fraction form
    1,670.28/2,305.32 = 1,007.16/x
  3. Step 3: Cross multiply
    1,670.28x = 2,305.32 × 1,007.16
  4. Step 4: Simplify right side
    1,670.28x = 2,321,826.09
  5. Step 5: Solve for x
    x = 2,321,826.09/1,670.28
  6. Step 6: Final answer
    x = 1,390.08

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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.