Home / 7,964.90-10,991.46-4,428.10

Finding the Fourth Proportional to 7,964.90, 10,991.46 and 4,428.10

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Solution

The fourth proportional to 7,964.90, 10,991.46 and 4,428.10 is: 6,110.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,964.90 : 10,991.46 = 4,428.10 : x
  2. Step 2: Convert to fraction form
    7,964.90/10,991.46 = 4,428.10/x
  3. Step 3: Cross multiply
    7,964.90x = 10,991.46 × 4,428.10
  4. Step 4: Simplify right side
    7,964.90x = 48,671,284.03
  5. Step 5: Solve for x
    x = 48,671,284.03/7,964.90
  6. Step 6: Final answer
    x = 6,110.72

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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.