Home / 3,450.30-4,761.40-1,878.40

Finding the Fourth Proportional to 3,450.30, 4,761.40 and 1,878.40

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Solution

The fourth proportional to 3,450.30, 4,761.40 and 1,878.40 is: 2,592.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,450.30 : 4,761.40 = 1,878.40 : x
  2. Step 2: Convert to fraction form
    3,450.30/4,761.40 = 1,878.40/x
  3. Step 3: Cross multiply
    3,450.30x = 4,761.40 × 1,878.40
  4. Step 4: Simplify right side
    3,450.30x = 8,943,813.76
  5. Step 5: Solve for x
    x = 8,943,813.76/3,450.30
  6. Step 6: Final answer
    x = 2,592.18

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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.