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Finding the Fourth Proportional to 7,013.96, 9,679.08 and 3,870.14

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Solution

The fourth proportional to 7,013.96, 9,679.08 and 3,870.14 is: 5,340.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,013.96 : 9,679.08 = 3,870.14 : x
  2. Step 2: Convert to fraction form
    7,013.96/9,679.08 = 3,870.14/x
  3. Step 3: Cross multiply
    7,013.96x = 9,679.08 × 3,870.14
  4. Step 4: Simplify right side
    7,013.96x = 37,459,394.67
  5. Step 5: Solve for x
    x = 37,459,394.67/7,013.96
  6. Step 6: Final answer
    x = 5,340.69

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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.