Home / 8,631.04-11,905.98-5,180.74

Finding the Fourth Proportional to 8,631.04, 11,905.98 and 5,180.74

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Solution

The fourth proportional to 8,631.04, 11,905.98 and 5,180.74 is: 7,146.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.04 : 11,905.98 = 5,180.74 : x
  2. Step 2: Convert to fraction form
    8,631.04/11,905.98 = 5,180.74/x
  3. Step 3: Cross multiply
    8,631.04x = 11,905.98 × 5,180.74
  4. Step 4: Simplify right side
    8,631.04x = 61,681,786.83
  5. Step 5: Solve for x
    x = 61,681,786.83/8,631.04
  6. Step 6: Final answer
    x = 7,146.51

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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.