Home / 3,117.54-4,678.65-1,269.33

Finding the Fourth Proportional to 3,117.54, 4,678.65 and 1,269.33

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Solution

The fourth proportional to 3,117.54, 4,678.65 and 1,269.33 is: 1,904.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.54 : 4,678.65 = 1,269.33 : x
  2. Step 2: Convert to fraction form
    3,117.54/4,678.65 = 1,269.33/x
  3. Step 3: Cross multiply
    3,117.54x = 4,678.65 × 1,269.33
  4. Step 4: Simplify right side
    3,117.54x = 5,938,750.80
  5. Step 5: Solve for x
    x = 5,938,750.80/3,117.54
  6. Step 6: Final answer
    x = 1,904.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.