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Finding the Fourth Proportional to 9,705.80, 14,558.99 and 2,685.87

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Solution

The fourth proportional to 9,705.80, 14,558.99 and 2,685.87 is: 4,028.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,705.80 : 14,558.99 = 2,685.87 : x
  2. Step 2: Convert to fraction form
    9,705.80/14,558.99 = 2,685.87/x
  3. Step 3: Cross multiply
    9,705.80x = 14,558.99 × 2,685.87
  4. Step 4: Simplify right side
    9,705.80x = 39,103,605.71
  5. Step 5: Solve for x
    x = 39,103,605.71/9,705.80
  6. Step 6: Final answer
    x = 4,028.89

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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.