Home / 8,180.65-12,271.79-2,985.31

Finding the Fourth Proportional to 8,180.65, 12,271.79 and 2,985.31

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Solution

The fourth proportional to 8,180.65, 12,271.79 and 2,985.31 is: 4,478.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,180.65 : 12,271.79 = 2,985.31 : x
  2. Step 2: Convert to fraction form
    8,180.65/12,271.79 = 2,985.31/x
  3. Step 3: Cross multiply
    8,180.65x = 12,271.79 × 2,985.31
  4. Step 4: Simplify right side
    8,180.65x = 36,635,097.40
  5. Step 5: Solve for x
    x = 36,635,097.40/8,180.65
  6. Step 6: Final answer
    x = 4,478.26

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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.