Home / 5,280.09-7,292.70-4,221.51

Finding the Fourth Proportional to 5,280.09, 7,292.70 and 4,221.51

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Solution

The fourth proportional to 5,280.09, 7,292.70 and 4,221.51 is: 5,830.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.09 : 7,292.70 = 4,221.51 : x
  2. Step 2: Convert to fraction form
    5,280.09/7,292.70 = 4,221.51/x
  3. Step 3: Cross multiply
    5,280.09x = 7,292.70 × 4,221.51
  4. Step 4: Simplify right side
    5,280.09x = 30,786,205.98
  5. Step 5: Solve for x
    x = 30,786,205.98/5,280.09
  6. Step 6: Final answer
    x = 5,830.62

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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.