Home / 1,678.47-2,316.02-932.41

Finding the Fourth Proportional to 1,678.47, 2,316.02 and 932.41

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Solution

The fourth proportional to 1,678.47, 2,316.02 and 932.41 is: 1,286.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678.47 : 2,316.02 = 932.41 : x
  2. Step 2: Convert to fraction form
    1,678.47/2,316.02 = 932.41/x
  3. Step 3: Cross multiply
    1,678.47x = 2,316.02 × 932.41
  4. Step 4: Simplify right side
    1,678.47x = 2,159,480.21
  5. Step 5: Solve for x
    x = 2,159,480.21/1,678.47
  6. Step 6: Final answer
    x = 1,286.58

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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.