Home / 9,116.40-12,579.84-5,137.14

Finding the Fourth Proportional to 9,116.40, 12,579.84 and 5,137.14

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Solution

The fourth proportional to 9,116.40, 12,579.84 and 5,137.14 is: 7,088.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,116.40 : 12,579.84 = 5,137.14 : x
  2. Step 2: Convert to fraction form
    9,116.40/12,579.84 = 5,137.14/x
  3. Step 3: Cross multiply
    9,116.40x = 12,579.84 × 5,137.14
  4. Step 4: Simplify right side
    9,116.40x = 64,624,399.26
  5. Step 5: Solve for x
    x = 64,624,399.26/9,116.40
  6. Step 6: Final answer
    x = 7,088.81

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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.