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Finding the Fourth Proportional to 8,965.13, 12,371.54 and 4,986.14

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Solution

The fourth proportional to 8,965.13, 12,371.54 and 4,986.14 is: 6,880.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,965.13 : 12,371.54 = 4,986.14 : x
  2. Step 2: Convert to fraction form
    8,965.13/12,371.54 = 4,986.14/x
  3. Step 3: Cross multiply
    8,965.13x = 12,371.54 × 4,986.14
  4. Step 4: Simplify right side
    8,965.13x = 61,686,143.67
  5. Step 5: Solve for x
    x = 61,686,143.67/8,965.13
  6. Step 6: Final answer
    x = 6,880.68

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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.