Home / 9,579.60-13,220.28-5,387.85

Finding the Fourth Proportional to 9,579.60, 13,220.28 and 5,387.85

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Solution

The fourth proportional to 9,579.60, 13,220.28 and 5,387.85 is: 7,435.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,579.60 : 13,220.28 = 5,387.85 : x
  2. Step 2: Convert to fraction form
    9,579.60/13,220.28 = 5,387.85/x
  3. Step 3: Cross multiply
    9,579.60x = 13,220.28 × 5,387.85
  4. Step 4: Simplify right side
    9,579.60x = 71,228,885.60
  5. Step 5: Solve for x
    x = 71,228,885.60/9,579.60
  6. Step 6: Final answer
    x = 7,435.48

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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.