Home / 7,965.42-10,991.91-4,428.60

Finding the Fourth Proportional to 7,965.42, 10,991.91 and 4,428.60

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Solution

The fourth proportional to 7,965.42, 10,991.91 and 4,428.60 is: 6,111.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,965.42 : 10,991.91 = 4,428.60 : x
  2. Step 2: Convert to fraction form
    7,965.42/10,991.91 = 4,428.60/x
  3. Step 3: Cross multiply
    7,965.42x = 10,991.91 × 4,428.60
  4. Step 4: Simplify right side
    7,965.42x = 48,678,772.63
  5. Step 5: Solve for x
    x = 48,678,772.63/7,965.42
  6. Step 6: Final answer
    x = 6,111.26

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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.