Home / 6,618.85-9,927.38-1,688.51

Finding the Fourth Proportional to 6,618.85, 9,927.38 and 1,688.51

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Solution

The fourth proportional to 6,618.85, 9,927.38 and 1,688.51 is: 2,532.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,618.85 : 9,927.38 = 1,688.51 : x
  2. Step 2: Convert to fraction form
    6,618.85/9,927.38 = 1,688.51/x
  3. Step 3: Cross multiply
    6,618.85x = 9,927.38 × 1,688.51
  4. Step 4: Simplify right side
    6,618.85x = 16,762,509.44
  5. Step 5: Solve for x
    x = 16,762,509.44/6,618.85
  6. Step 6: Final answer
    x = 2,532.54

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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.