Home / 7,579.80-10,459.74-4,221.72

Finding the Fourth Proportional to 7,579.80, 10,459.74 and 4,221.72

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Solution

The fourth proportional to 7,579.80, 10,459.74 and 4,221.72 is: 5,825.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,579.80 : 10,459.74 = 4,221.72 : x
  2. Step 2: Convert to fraction form
    7,579.80/10,459.74 = 4,221.72/x
  3. Step 3: Cross multiply
    7,579.80x = 10,459.74 × 4,221.72
  4. Step 4: Simplify right side
    7,579.80x = 44,158,093.55
  5. Step 5: Solve for x
    x = 44,158,093.55/7,579.80
  6. Step 6: Final answer
    x = 5,825.76

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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.