Home / 3,312.33-4,570.79-1,820.21

Finding the Fourth Proportional to 3,312.33, 4,570.79 and 1,820.21

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Solution

The fourth proportional to 3,312.33, 4,570.79 and 1,820.21 is: 2,511.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,312.33 : 4,570.79 = 1,820.21 : x
  2. Step 2: Convert to fraction form
    3,312.33/4,570.79 = 1,820.21/x
  3. Step 3: Cross multiply
    3,312.33x = 4,570.79 × 1,820.21
  4. Step 4: Simplify right side
    3,312.33x = 8,319,793.12
  5. Step 5: Solve for x
    x = 8,319,793.12/3,312.33
  6. Step 6: Final answer
    x = 2,511.77

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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.