Home / 2,990.44-4,486.38-1,042.72

Finding the Fourth Proportional to 2,990.44, 4,486.38 and 1,042.72

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Solution

The fourth proportional to 2,990.44, 4,486.38 and 1,042.72 is: 1,564.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.44 : 4,486.38 = 1,042.72 : x
  2. Step 2: Convert to fraction form
    2,990.44/4,486.38 = 1,042.72/x
  3. Step 3: Cross multiply
    2,990.44x = 4,486.38 × 1,042.72
  4. Step 4: Simplify right side
    2,990.44x = 4,678,038.15
  5. Step 5: Solve for x
    x = 4,678,038.15/2,990.44
  6. Step 6: Final answer
    x = 1,564.33

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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.