Home / 2,990.18-4,129.08-1,873.02

Finding the Fourth Proportional to 2,990.18, 4,129.08 and 1,873.02

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Solution

The fourth proportional to 2,990.18, 4,129.08 and 1,873.02 is: 2,586.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.18 : 4,129.08 = 1,873.02 : x
  2. Step 2: Convert to fraction form
    2,990.18/4,129.08 = 1,873.02/x
  3. Step 3: Cross multiply
    2,990.18x = 4,129.08 × 1,873.02
  4. Step 4: Simplify right side
    2,990.18x = 7,733,857.88
  5. Step 5: Solve for x
    x = 7,733,857.88/2,990.18
  6. Step 6: Final answer
    x = 2,586.42

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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.