Home / 7,864.18-11,785.78-5,089.42

Finding the Fourth Proportional to 7,864.18, 11,785.78 and 5,089.42

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Solution

The fourth proportional to 7,864.18, 11,785.78 and 5,089.42 is: 7,627.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,864.18 : 11,785.78 = 5,089.42 : x
  2. Step 2: Convert to fraction form
    7,864.18/11,785.78 = 5,089.42/x
  3. Step 3: Cross multiply
    7,864.18x = 11,785.78 × 5,089.42
  4. Step 4: Simplify right side
    7,864.18x = 59,982,784.45
  5. Step 5: Solve for x
    x = 59,982,784.45/7,864.18
  6. Step 6: Final answer
    x = 7,627.34

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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.