Home / 1,680.42-2,518.05-1,130.56

Finding the Fourth Proportional to 1,680.42, 2,518.05 and 1,130.56

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Solution

The fourth proportional to 1,680.42, 2,518.05 and 1,130.56 is: 1,694.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.42 : 2,518.05 = 1,130.56 : x
  2. Step 2: Convert to fraction form
    1,680.42/2,518.05 = 1,130.56/x
  3. Step 3: Cross multiply
    1,680.42x = 2,518.05 × 1,130.56
  4. Step 4: Simplify right side
    1,680.42x = 2,846,806.61
  5. Step 5: Solve for x
    x = 2,846,806.61/1,680.42
  6. Step 6: Final answer
    x = 1,694.10

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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.