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Finding the Fourth Proportional to 7,014.36, 9,679.84 and 3,870.54

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Solution

The fourth proportional to 7,014.36, 9,679.84 and 3,870.54 is: 5,341.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,014.36 : 9,679.84 = 3,870.54 : x
  2. Step 2: Convert to fraction form
    7,014.36/9,679.84 = 3,870.54/x
  3. Step 3: Cross multiply
    7,014.36x = 9,679.84 × 3,870.54
  4. Step 4: Simplify right side
    7,014.36x = 37,466,207.91
  5. Step 5: Solve for x
    x = 37,466,207.91/7,014.36
  6. Step 6: Final answer
    x = 5,341.36

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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.