Home / 1,678.06-2,315.68-932.02

Finding the Fourth Proportional to 1,678.06, 2,315.68 and 932.02

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Solution

The fourth proportional to 1,678.06, 2,315.68 and 932.02 is: 1,286.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678.06 : 2,315.68 = 932.02 : x
  2. Step 2: Convert to fraction form
    1,678.06/2,315.68 = 932.02/x
  3. Step 3: Cross multiply
    1,678.06x = 2,315.68 × 932.02
  4. Step 4: Simplify right side
    1,678.06x = 2,158,260.07
  5. Step 5: Solve for x
    x = 2,158,260.07/1,678.06
  6. Step 6: Final answer
    x = 1,286.16

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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.