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Finding the Fourth Proportional to 9,705.84, 13,394.07 and 5,457.14

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Solution

The fourth proportional to 9,705.84, 13,394.07 and 5,457.14 is: 7,530.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,705.84 : 13,394.07 = 5,457.14 : x
  2. Step 2: Convert to fraction form
    9,705.84/13,394.07 = 5,457.14/x
  3. Step 3: Cross multiply
    9,705.84x = 13,394.07 × 5,457.14
  4. Step 4: Simplify right side
    9,705.84x = 73,093,315.16
  5. Step 5: Solve for x
    x = 73,093,315.16/9,705.84
  6. Step 6: Final answer
    x = 7,530.86

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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.