Home / 7,957.28-11,931.72-2,690.48

Finding the Fourth Proportional to 7,957.28, 11,931.72 and 2,690.48

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Solution

The fourth proportional to 7,957.28, 11,931.72 and 2,690.48 is: 4,034.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,957.28 : 11,931.72 = 2,690.48 : x
  2. Step 2: Convert to fraction form
    7,957.28/11,931.72 = 2,690.48/x
  3. Step 3: Cross multiply
    7,957.28x = 11,931.72 × 2,690.48
  4. Step 4: Simplify right side
    7,957.28x = 32,102,054.03
  5. Step 5: Solve for x
    x = 32,102,054.03/7,957.28
  6. Step 6: Final answer
    x = 4,034.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.