Home / 2,955.20-4,078.01-1,628.66

Finding the Fourth Proportional to 2,955.20, 4,078.01 and 1,628.66

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Solution

The fourth proportional to 2,955.20, 4,078.01 and 1,628.66 is: 2,247.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,955.20 : 4,078.01 = 1,628.66 : x
  2. Step 2: Convert to fraction form
    2,955.20/4,078.01 = 1,628.66/x
  3. Step 3: Cross multiply
    2,955.20x = 4,078.01 × 1,628.66
  4. Step 4: Simplify right side
    2,955.20x = 6,641,671.38
  5. Step 5: Solve for x
    x = 6,641,671.38/2,955.20
  6. Step 6: Final answer
    x = 2,247.45

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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.