Home / 2,955.25-4,078.65-1,907.11

Finding the Fourth Proportional to 2,955.25, 4,078.65 and 1,907.11

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Solution

The fourth proportional to 2,955.25, 4,078.65 and 1,907.11 is: 2,632.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,955.25 : 4,078.65 = 1,907.11 : x
  2. Step 2: Convert to fraction form
    2,955.25/4,078.65 = 1,907.11/x
  3. Step 3: Cross multiply
    2,955.25x = 4,078.65 × 1,907.11
  4. Step 4: Simplify right side
    2,955.25x = 7,778,434.20
  5. Step 5: Solve for x
    x = 7,778,434.20/2,955.25
  6. Step 6: Final answer
    x = 2,632.07

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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.