Home / 6,579.84-9,078.72-3,926.40

Finding the Fourth Proportional to 6,579.84, 9,078.72 and 3,926.40

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Solution

The fourth proportional to 6,579.84, 9,078.72 and 3,926.40 is: 5,417.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,579.84 : 9,078.72 = 3,926.40 : x
  2. Step 2: Convert to fraction form
    6,579.84/9,078.72 = 3,926.40/x
  3. Step 3: Cross multiply
    6,579.84x = 9,078.72 × 3,926.40
  4. Step 4: Simplify right side
    6,579.84x = 35,646,686.21
  5. Step 5: Solve for x
    x = 35,646,686.21/6,579.84
  6. Step 6: Final answer
    x = 5,417.56

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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.