Home / 7,578.79-10,458.91-4,221.65

Finding the Fourth Proportional to 7,578.79, 10,458.91 and 4,221.65

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Solution

The fourth proportional to 7,578.79, 10,458.91 and 4,221.65 is: 5,825.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,578.79 : 10,458.91 = 4,221.65 : x
  2. Step 2: Convert to fraction form
    7,578.79/10,458.91 = 4,221.65/x
  3. Step 3: Cross multiply
    7,578.79x = 10,458.91 × 4,221.65
  4. Step 4: Simplify right side
    7,578.79x = 44,153,900.52
  5. Step 5: Solve for x
    x = 44,153,900.52/7,578.79
  6. Step 6: Final answer
    x = 5,825.98

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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.