Home / 3,211.80-4,818.90-1,456.29

Finding the Fourth Proportional to 3,211.80, 4,818.90 and 1,456.29

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Solution

The fourth proportional to 3,211.80, 4,818.90 and 1,456.29 is: 2,184.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.80 : 4,818.90 = 1,456.29 : x
  2. Step 2: Convert to fraction form
    3,211.80/4,818.90 = 1,456.29/x
  3. Step 3: Cross multiply
    3,211.80x = 4,818.90 × 1,456.29
  4. Step 4: Simplify right side
    3,211.80x = 7,017,715.88
  5. Step 5: Solve for x
    x = 7,017,715.88/3,211.80
  6. Step 6: Final answer
    x = 2,184.98

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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.