Home / 3,354.18-4,628.40-1,918.56

Finding the Fourth Proportional to 3,354.18, 4,628.40 and 1,918.56

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Solution

The fourth proportional to 3,354.18, 4,628.40 and 1,918.56 is: 2,647.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,354.18 : 4,628.40 = 1,918.56 : x
  2. Step 2: Convert to fraction form
    3,354.18/4,628.40 = 1,918.56/x
  3. Step 3: Cross multiply
    3,354.18x = 4,628.40 × 1,918.56
  4. Step 4: Simplify right side
    3,354.18x = 8,879,863.10
  5. Step 5: Solve for x
    x = 8,879,863.10/3,354.18
  6. Step 6: Final answer
    x = 2,647.40

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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.