Home / 8,515.71-11,747.86-4,977.36

Finding the Fourth Proportional to 8,515.71, 11,747.86 and 4,977.36

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Solution

The fourth proportional to 8,515.71, 11,747.86 and 4,977.36 is: 6,866.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,515.71 : 11,747.86 = 4,977.36 : x
  2. Step 2: Convert to fraction form
    8,515.71/11,747.86 = 4,977.36/x
  3. Step 3: Cross multiply
    8,515.71x = 11,747.86 × 4,977.36
  4. Step 4: Simplify right side
    8,515.71x = 58,473,328.45
  5. Step 5: Solve for x
    x = 58,473,328.45/8,515.71
  6. Step 6: Final answer
    x = 6,866.52

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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.