Home / 2,920.96-4,030.76-1,661.68

Finding the Fourth Proportional to 2,920.96, 4,030.76 and 1,661.68

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Solution

The fourth proportional to 2,920.96, 4,030.76 and 1,661.68 is: 2,293.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.96 : 4,030.76 = 1,661.68 : x
  2. Step 2: Convert to fraction form
    2,920.96/4,030.76 = 1,661.68/x
  3. Step 3: Cross multiply
    2,920.96x = 4,030.76 × 1,661.68
  4. Step 4: Simplify right side
    2,920.96x = 6,697,833.28
  5. Step 5: Solve for x
    x = 6,697,833.28/2,920.96
  6. Step 6: Final answer
    x = 2,293.02

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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.