Home / 6,450-8,901.56-4,091.28

Finding the Fourth Proportional to 6,450, 8,901.56 and 4,091.28

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Solution

The fourth proportional to 6,450, 8,901.56 and 4,091.28 is: 5,646.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,450 : 8,901.56 = 4,091.28 : x
  2. Step 2: Convert to fraction form
    6,450/8,901.56 = 4,091.28/x
  3. Step 3: Cross multiply
    6,450x = 8,901.56 × 4,091.28
  4. Step 4: Simplify right side
    6,450x = 36,418,774.40
  5. Step 5: Solve for x
    x = 36,418,774.40/6,450
  6. Step 6: Final answer
    x = 5,646.32

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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.