Home / 3,246.70-4,478.75-1,918.10

Finding the Fourth Proportional to 3,246.70, 4,478.75 and 1,918.10

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Solution

The fourth proportional to 3,246.70, 4,478.75 and 1,918.10 is: 2,645.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,246.70 : 4,478.75 = 1,918.10 : x
  2. Step 2: Convert to fraction form
    3,246.70/4,478.75 = 1,918.10/x
  3. Step 3: Cross multiply
    3,246.70x = 4,478.75 × 1,918.10
  4. Step 4: Simplify right side
    3,246.70x = 8,590,667.98
  5. Step 5: Solve for x
    x = 8,590,667.98/3,246.70
  6. Step 6: Final answer
    x = 2,645.97

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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.