Home / 4,747.71-7,130.80-3,870.86

Finding the Fourth Proportional to 4,747.71, 7,130.80 and 3,870.86

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Solution

The fourth proportional to 4,747.71, 7,130.80 and 3,870.86 is: 5,813.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,747.71 : 7,130.80 = 3,870.86 : x
  2. Step 2: Convert to fraction form
    4,747.71/7,130.80 = 3,870.86/x
  3. Step 3: Cross multiply
    4,747.71x = 7,130.80 × 3,870.86
  4. Step 4: Simplify right side
    4,747.71x = 27,602,297.67
  5. Step 5: Solve for x
    x = 27,602,297.67/4,747.71
  6. Step 6: Final answer
    x = 5,813.81

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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.