Home / 2,990.18-4,125.60-1,731.24

Finding the Fourth Proportional to 2,990.18, 4,125.60 and 1,731.24

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Solution

The fourth proportional to 2,990.18, 4,125.60 and 1,731.24 is: 2,388.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.18 : 4,125.60 = 1,731.24 : x
  2. Step 2: Convert to fraction form
    2,990.18/4,125.60 = 1,731.24/x
  3. Step 3: Cross multiply
    2,990.18x = 4,125.60 × 1,731.24
  4. Step 4: Simplify right side
    2,990.18x = 7,142,403.74
  5. Step 5: Solve for x
    x = 7,142,403.74/2,990.18
  6. Step 6: Final answer
    x = 2,388.62

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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.