Home / 3,215.80-4,823.70-1,833.40

Finding the Fourth Proportional to 3,215.80, 4,823.70 and 1,833.40

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Solution

The fourth proportional to 3,215.80, 4,823.70 and 1,833.40 is: 2,750.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.80 : 4,823.70 = 1,833.40 : x
  2. Step 2: Convert to fraction form
    3,215.80/4,823.70 = 1,833.40/x
  3. Step 3: Cross multiply
    3,215.80x = 4,823.70 × 1,833.40
  4. Step 4: Simplify right side
    3,215.80x = 8,843,771.58
  5. Step 5: Solve for x
    x = 8,843,771.58/3,215.80
  6. Step 6: Final answer
    x = 2,750.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.