Home / 7,290.57-10,939.50-2,911.71

Finding the Fourth Proportional to 7,290.57, 10,939.50 and 2,911.71

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Solution

The fourth proportional to 7,290.57, 10,939.50 and 2,911.71 is: 4,369.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,290.57 : 10,939.50 = 2,911.71 : x
  2. Step 2: Convert to fraction form
    7,290.57/10,939.50 = 2,911.71/x
  3. Step 3: Cross multiply
    7,290.57x = 10,939.50 × 2,911.71
  4. Step 4: Simplify right side
    7,290.57x = 31,852,651.55
  5. Step 5: Solve for x
    x = 31,852,651.55/7,290.57
  6. Step 6: Final answer
    x = 4,369.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.