Home / 2,310.57-3,190.05-1,780.56

Finding the Fourth Proportional to 2,310.57, 3,190.05 and 1,780.56

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Solution

The fourth proportional to 2,310.57, 3,190.05 and 1,780.56 is: 2,458.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,310.57 : 3,190.05 = 1,780.56 : x
  2. Step 2: Convert to fraction form
    2,310.57/3,190.05 = 1,780.56/x
  3. Step 3: Cross multiply
    2,310.57x = 3,190.05 × 1,780.56
  4. Step 4: Simplify right side
    2,310.57x = 5,680,075.43
  5. Step 5: Solve for x
    x = 5,680,075.43/2,310.57
  6. Step 6: Final answer
    x = 2,458.30

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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.