Home / 8,388.45-11,570.31-5,731.65

Finding the Fourth Proportional to 8,388.45, 11,570.31 and 5,731.65

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Solution

The fourth proportional to 8,388.45, 11,570.31 and 5,731.65 is: 7,905.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,388.45 : 11,570.31 = 5,731.65 : x
  2. Step 2: Convert to fraction form
    8,388.45/11,570.31 = 5,731.65/x
  3. Step 3: Cross multiply
    8,388.45x = 11,570.31 × 5,731.65
  4. Step 4: Simplify right side
    8,388.45x = 66,316,967.31
  5. Step 5: Solve for x
    x = 66,316,967.31/8,388.45
  6. Step 6: Final answer
    x = 7,905.75

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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.