Home / 3,516.40-4,852.95-1,945

Finding the Fourth Proportional to 3,516.40, 4,852.95 and 1,945

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Solution

The fourth proportional to 3,516.40, 4,852.95 and 1,945 is: 2,684.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,516.40 : 4,852.95 = 1,945 : x
  2. Step 2: Convert to fraction form
    3,516.40/4,852.95 = 1,945/x
  3. Step 3: Cross multiply
    3,516.40x = 4,852.95 × 1,945
  4. Step 4: Simplify right side
    3,516.40x = 9,438,987.75
  5. Step 5: Solve for x
    x = 9,438,987.75/3,516.40
  6. Step 6: Final answer
    x = 2,684.28

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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.