Home / 2,990.43-4,126.53-1,731.58

Finding the Fourth Proportional to 2,990.43, 4,126.53 and 1,731.58

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Solution

The fourth proportional to 2,990.43, 4,126.53 and 1,731.58 is: 2,389.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.43 : 4,126.53 = 1,731.58 : x
  2. Step 2: Convert to fraction form
    2,990.43/4,126.53 = 1,731.58/x
  3. Step 3: Cross multiply
    2,990.43x = 4,126.53 × 1,731.58
  4. Step 4: Simplify right side
    2,990.43x = 7,145,398.35
  5. Step 5: Solve for x
    x = 7,145,398.35/2,990.43
  6. Step 6: Final answer
    x = 2,389.42

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1.5x scale

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.