Home / 2,915.03-4,370.93-1,991.63

Finding the Fourth Proportional to 2,915.03, 4,370.93 and 1,991.63

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Solution

The fourth proportional to 2,915.03, 4,370.93 and 1,991.63 is: 2,986.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,915.03 : 4,370.93 = 1,991.63 : x
  2. Step 2: Convert to fraction form
    2,915.03/4,370.93 = 1,991.63/x
  3. Step 3: Cross multiply
    2,915.03x = 4,370.93 × 1,991.63
  4. Step 4: Simplify right side
    2,915.03x = 8,705,262.17
  5. Step 5: Solve for x
    x = 8,705,262.17/2,915.03
  6. Step 6: Final answer
    x = 2,986.34

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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.