Home / 1,837.80-2,756.72-668.63

Finding the Fourth Proportional to 1,837.80, 2,756.72 and 668.63

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Solution

The fourth proportional to 1,837.80, 2,756.72 and 668.63 is: 1,002.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,837.80 : 2,756.72 = 668.63 : x
  2. Step 2: Convert to fraction form
    1,837.80/2,756.72 = 668.63/x
  3. Step 3: Cross multiply
    1,837.80x = 2,756.72 × 668.63
  4. Step 4: Simplify right side
    1,837.80x = 1,843,225.69
  5. Step 5: Solve for x
    x = 1,843,225.69/1,837.80
  6. Step 6: Final answer
    x = 1,002.95

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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.