Home / 9,876.87-13,624.70-6,340.61

Finding the Fourth Proportional to 9,876.87, 13,624.70 and 6,340.61

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Solution

The fourth proportional to 9,876.87, 13,624.70 and 6,340.61 is: 8,746.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,876.87 : 13,624.70 = 6,340.61 : x
  2. Step 2: Convert to fraction form
    9,876.87/13,624.70 = 6,340.61/x
  3. Step 3: Cross multiply
    9,876.87x = 13,624.70 × 6,340.61
  4. Step 4: Simplify right side
    9,876.87x = 86,388,958.98
  5. Step 5: Solve for x
    x = 86,388,958.98/9,876.87
  6. Step 6: Final answer
    x = 8,746.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.