Home / 2,920.55-4,379.76-1,458.69

Finding the Fourth Proportional to 2,920.55, 4,379.76 and 1,458.69

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Solution

The fourth proportional to 2,920.55, 4,379.76 and 1,458.69 is: 2,187.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.55 : 4,379.76 = 1,458.69 : x
  2. Step 2: Convert to fraction form
    2,920.55/4,379.76 = 1,458.69/x
  3. Step 3: Cross multiply
    2,920.55x = 4,379.76 × 1,458.69
  4. Step 4: Simplify right side
    2,920.55x = 6,388,712.11
  5. Step 5: Solve for x
    x = 6,388,712.11/2,920.55
  6. Step 6: Final answer
    x = 2,187.51

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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.