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Finding the Fourth Proportional to 7,290.48, 10,935.77 and 3,126.98

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Solution

The fourth proportional to 7,290.48, 10,935.77 and 3,126.98 is: 4,690.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,290.48 : 10,935.77 = 3,126.98 : x
  2. Step 2: Convert to fraction form
    7,290.48/10,935.77 = 3,126.98/x
  3. Step 3: Cross multiply
    7,290.48x = 10,935.77 × 3,126.98
  4. Step 4: Simplify right side
    7,290.48x = 34,195,934.07
  5. Step 5: Solve for x
    x = 34,195,934.07/7,290.48
  6. Step 6: Final answer
    x = 4,690.49

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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.