Home / 7,885.42-11,816.79-5,423.02

Finding the Fourth Proportional to 7,885.42, 11,816.79 and 5,423.02

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Solution

The fourth proportional to 7,885.42, 11,816.79 and 5,423.02 is: 8,126.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,885.42 : 11,816.79 = 5,423.02 : x
  2. Step 2: Convert to fraction form
    7,885.42/11,816.79 = 5,423.02/x
  3. Step 3: Cross multiply
    7,885.42x = 11,816.79 × 5,423.02
  4. Step 4: Simplify right side
    7,885.42x = 64,082,688.51
  5. Step 5: Solve for x
    x = 64,082,688.51/7,885.42
  6. Step 6: Final answer
    x = 8,126.73

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1.5x scale

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.