Home / 8,905.81-13,358.64-2,665.65

Finding the Fourth Proportional to 8,905.81, 13,358.64 and 2,665.65

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Solution

The fourth proportional to 8,905.81, 13,358.64 and 2,665.65 is: 3,998.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,905.81 : 13,358.64 = 2,665.65 : x
  2. Step 2: Convert to fraction form
    8,905.81/13,358.64 = 2,665.65/x
  3. Step 3: Cross multiply
    8,905.81x = 13,358.64 × 2,665.65
  4. Step 4: Simplify right side
    8,905.81x = 35,609,458.72
  5. Step 5: Solve for x
    x = 35,609,458.72/8,905.81
  6. Step 6: Final answer
    x = 3,998.45

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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.