Home / 7,579.40-10,458.50-4,221.74

Finding the Fourth Proportional to 7,579.40, 10,458.50 and 4,221.74

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Solution

The fourth proportional to 7,579.40, 10,458.50 and 4,221.74 is: 5,825.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,579.40 : 10,458.50 = 4,221.74 : x
  2. Step 2: Convert to fraction form
    7,579.40/10,458.50 = 4,221.74/x
  3. Step 3: Cross multiply
    7,579.40x = 10,458.50 × 4,221.74
  4. Step 4: Simplify right side
    7,579.40x = 44,153,067.79
  5. Step 5: Solve for x
    x = 44,153,067.79/7,579.40
  6. Step 6: Final answer
    x = 5,825.40

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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.