Home / 2,920.73-4,030.25-1,661.78

Finding the Fourth Proportional to 2,920.73, 4,030.25 and 1,661.78

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Solution

The fourth proportional to 2,920.73, 4,030.25 and 1,661.78 is: 2,293.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.73 : 4,030.25 = 1,661.78 : x
  2. Step 2: Convert to fraction form
    2,920.73/4,030.25 = 1,661.78/x
  3. Step 3: Cross multiply
    2,920.73x = 4,030.25 × 1,661.78
  4. Step 4: Simplify right side
    2,920.73x = 6,697,360.38
  5. Step 5: Solve for x
    x = 6,697,360.38/2,920.73
  6. Step 6: Final answer
    x = 2,293.05

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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.