Home / 4,912.12-7,368.20-1,990.48

Finding the Fourth Proportional to 4,912.12, 7,368.20 and 1,990.48

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Solution

The fourth proportional to 4,912.12, 7,368.20 and 1,990.48 is: 2,985.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,912.12 : 7,368.20 = 1,990.48 : x
  2. Step 2: Convert to fraction form
    4,912.12/7,368.20 = 1,990.48/x
  3. Step 3: Cross multiply
    4,912.12x = 7,368.20 × 1,990.48
  4. Step 4: Simplify right side
    4,912.12x = 14,666,254.74
  5. Step 5: Solve for x
    x = 14,666,254.74/4,912.12
  6. Step 6: Final answer
    x = 2,985.73

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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.