Home / 7,328.80-10,113.69-3,971.62

Finding the Fourth Proportional to 7,328.80, 10,113.69 and 3,971.62

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Solution

The fourth proportional to 7,328.80, 10,113.69 and 3,971.62 is: 5,480.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,328.80 : 10,113.69 = 3,971.62 : x
  2. Step 2: Convert to fraction form
    7,328.80/10,113.69 = 3,971.62/x
  3. Step 3: Cross multiply
    7,328.80x = 10,113.69 × 3,971.62
  4. Step 4: Simplify right side
    7,328.80x = 40,167,733.48
  5. Step 5: Solve for x
    x = 40,167,733.48/7,328.80
  6. Step 6: Final answer
    x = 5,480.81

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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.