Home / 4,920.90-7,382.29-1,590.05

Finding the Fourth Proportional to 4,920.90, 7,382.29 and 1,590.05

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Solution

The fourth proportional to 4,920.90, 7,382.29 and 1,590.05 is: 2,385.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.90 : 7,382.29 = 1,590.05 : x
  2. Step 2: Convert to fraction form
    4,920.90/7,382.29 = 1,590.05/x
  3. Step 3: Cross multiply
    4,920.90x = 7,382.29 × 1,590.05
  4. Step 4: Simplify right side
    4,920.90x = 11,738,186.15
  5. Step 5: Solve for x
    x = 11,738,186.15/4,920.90
  6. Step 6: Final answer
    x = 2,385.37

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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.