Home / 3,190.57-4,783.95-1,315.90

Finding the Fourth Proportional to 3,190.57, 4,783.95 and 1,315.90

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Solution

The fourth proportional to 3,190.57, 4,783.95 and 1,315.90 is: 1,973.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,190.57 : 4,783.95 = 1,315.90 : x
  2. Step 2: Convert to fraction form
    3,190.57/4,783.95 = 1,315.90/x
  3. Step 3: Cross multiply
    3,190.57x = 4,783.95 × 1,315.90
  4. Step 4: Simplify right side
    3,190.57x = 6,295,199.81
  5. Step 5: Solve for x
    x = 6,295,199.81/3,190.57
  6. Step 6: Final answer
    x = 1,973.06

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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.