Home / 6,513.80-8,991.09-4,155.94

Finding the Fourth Proportional to 6,513.80, 8,991.09 and 4,155.94

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Solution

The fourth proportional to 6,513.80, 8,991.09 and 4,155.94 is: 5,736.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,513.80 : 8,991.09 = 4,155.94 : x
  2. Step 2: Convert to fraction form
    6,513.80/8,991.09 = 4,155.94/x
  3. Step 3: Cross multiply
    6,513.80x = 8,991.09 × 4,155.94
  4. Step 4: Simplify right side
    6,513.80x = 37,366,364.84
  5. Step 5: Solve for x
    x = 37,366,364.84/6,513.80
  6. Step 6: Final answer
    x = 5,736.50

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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.