Home / 6,486.40-9,730.95-2,789.56

Finding the Fourth Proportional to 6,486.40, 9,730.95 and 2,789.56

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Solution

The fourth proportional to 6,486.40, 9,730.95 and 2,789.56 is: 4,184.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,486.40 : 9,730.95 = 2,789.56 : x
  2. Step 2: Convert to fraction form
    6,486.40/9,730.95 = 2,789.56/x
  3. Step 3: Cross multiply
    6,486.40x = 9,730.95 × 2,789.56
  4. Step 4: Simplify right side
    6,486.40x = 27,145,068.88
  5. Step 5: Solve for x
    x = 27,145,068.88/6,486.40
  6. Step 6: Final answer
    x = 4,184.92

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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.