Home / 3,180.70-4,389.14-1,783.18

Finding the Fourth Proportional to 3,180.70, 4,389.14 and 1,783.18

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Solution

The fourth proportional to 3,180.70, 4,389.14 and 1,783.18 is: 2,460.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.70 : 4,389.14 = 1,783.18 : x
  2. Step 2: Convert to fraction form
    3,180.70/4,389.14 = 1,783.18/x
  3. Step 3: Cross multiply
    3,180.70x = 4,389.14 × 1,783.18
  4. Step 4: Simplify right side
    3,180.70x = 7,826,626.67
  5. Step 5: Solve for x
    x = 7,826,626.67/3,180.70
  6. Step 6: Final answer
    x = 2,460.66

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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.