Home / 5,118.48-7,677.73-1,420.72

Finding the Fourth Proportional to 5,118.48, 7,677.73 and 1,420.72

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Solution

The fourth proportional to 5,118.48, 7,677.73 and 1,420.72 is: 2,131.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.48 : 7,677.73 = 1,420.72 : x
  2. Step 2: Convert to fraction form
    5,118.48/7,677.73 = 1,420.72/x
  3. Step 3: Cross multiply
    5,118.48x = 7,677.73 × 1,420.72
  4. Step 4: Simplify right side
    5,118.48x = 10,907,881.65
  5. Step 5: Solve for x
    x = 10,907,881.65/5,118.48
  6. Step 6: Final answer
    x = 2,131.08

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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.