Home / 6,619.68-9,929.50-1,689.31

Finding the Fourth Proportional to 6,619.68, 9,929.50 and 1,689.31

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Solution

The fourth proportional to 6,619.68, 9,929.50 and 1,689.31 is: 2,533.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,619.68 : 9,929.50 = 1,689.31 : x
  2. Step 2: Convert to fraction form
    6,619.68/9,929.50 = 1,689.31/x
  3. Step 3: Cross multiply
    6,619.68x = 9,929.50 × 1,689.31
  4. Step 4: Simplify right side
    6,619.68x = 16,774,059.21
  5. Step 5: Solve for x
    x = 16,774,059.21/6,619.68
  6. Step 6: Final answer
    x = 2,533.97

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1.5x scale

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.