Home / 8,721.98-12,036.27-4,743.09

Finding the Fourth Proportional to 8,721.98, 12,036.27 and 4,743.09

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Solution

The fourth proportional to 8,721.98, 12,036.27 and 4,743.09 is: 6,545.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.98 : 12,036.27 = 4,743.09 : x
  2. Step 2: Convert to fraction form
    8,721.98/12,036.27 = 4,743.09/x
  3. Step 3: Cross multiply
    8,721.98x = 12,036.27 × 4,743.09
  4. Step 4: Simplify right side
    8,721.98x = 57,089,111.87
  5. Step 5: Solve for x
    x = 57,089,111.87/8,721.98
  6. Step 6: Final answer
    x = 6,545.43

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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.