Home / 7,964.32-10,991.28-4,428.58

Finding the Fourth Proportional to 7,964.32, 10,991.28 and 4,428.58

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Solution

The fourth proportional to 7,964.32, 10,991.28 and 4,428.58 is: 6,111.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,964.32 : 10,991.28 = 4,428.58 : x
  2. Step 2: Convert to fraction form
    7,964.32/10,991.28 = 4,428.58/x
  3. Step 3: Cross multiply
    7,964.32x = 10,991.28 × 4,428.58
  4. Step 4: Simplify right side
    7,964.32x = 48,675,762.78
  5. Step 5: Solve for x
    x = 48,675,762.78/7,964.32
  6. Step 6: Final answer
    x = 6,111.73

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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.