Home / 6,828.30-9,420.72-4,140.34

Finding the Fourth Proportional to 6,828.30, 9,420.72 and 4,140.34

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Solution

The fourth proportional to 6,828.30, 9,420.72 and 4,140.34 is: 5,712.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,828.30 : 9,420.72 = 4,140.34 : x
  2. Step 2: Convert to fraction form
    6,828.30/9,420.72 = 4,140.34/x
  3. Step 3: Cross multiply
    6,828.30x = 9,420.72 × 4,140.34
  4. Step 4: Simplify right side
    6,828.30x = 39,004,983.84
  5. Step 5: Solve for x
    x = 39,004,983.84/6,828.30
  6. Step 6: Final answer
    x = 5,712.25

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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.