Home / 6,619.33-9,929.64-1,689.01

Finding the Fourth Proportional to 6,619.33, 9,929.64 and 1,689.01

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Solution

The fourth proportional to 6,619.33, 9,929.64 and 1,689.01 is: 2,533.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,619.33 : 9,929.64 = 1,689.01 : x
  2. Step 2: Convert to fraction form
    6,619.33/9,929.64 = 1,689.01/x
  3. Step 3: Cross multiply
    6,619.33x = 9,929.64 × 1,689.01
  4. Step 4: Simplify right side
    6,619.33x = 16,771,261.26
  5. Step 5: Solve for x
    x = 16,771,261.26/6,619.33
  6. Step 6: Final answer
    x = 2,533.68

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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.