Home / 1,679.07-2,519.33-947.55

Finding the Fourth Proportional to 1,679.07, 2,519.33 and 947.55

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Solution

The fourth proportional to 1,679.07, 2,519.33 and 947.55 is: 1,421.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.07 : 2,519.33 = 947.55 : x
  2. Step 2: Convert to fraction form
    1,679.07/2,519.33 = 947.55/x
  3. Step 3: Cross multiply
    1,679.07x = 2,519.33 × 947.55
  4. Step 4: Simplify right side
    1,679.07x = 2,387,186.40
  5. Step 5: Solve for x
    x = 2,387,186.40/1,679.07
  6. Step 6: Final answer
    x = 1,421.73

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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.