Home / 6,390.08-9,581.15-2,690.40

Finding the Fourth Proportional to 6,390.08, 9,581.15 and 2,690.40

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Solution

The fourth proportional to 6,390.08, 9,581.15 and 2,690.40 is: 4,033.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,390.08 : 9,581.15 = 2,690.40 : x
  2. Step 2: Convert to fraction form
    6,390.08/9,581.15 = 2,690.40/x
  3. Step 3: Cross multiply
    6,390.08x = 9,581.15 × 2,690.40
  4. Step 4: Simplify right side
    6,390.08x = 25,777,112.51
  5. Step 5: Solve for x
    x = 25,777,112.51/6,390.08
  6. Step 6: Final answer
    x = 4,033.93

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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.