Home / 7,127.49-10,681.82-5,159.70

Finding the Fourth Proportional to 7,127.49, 10,681.82 and 5,159.70

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Solution

The fourth proportional to 7,127.49, 10,681.82 and 5,159.70 is: 7,732.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.49 : 10,681.82 = 5,159.70 : x
  2. Step 2: Convert to fraction form
    7,127.49/10,681.82 = 5,159.70/x
  3. Step 3: Cross multiply
    7,127.49x = 10,681.82 × 5,159.70
  4. Step 4: Simplify right side
    7,127.49x = 55,114,986.65
  5. Step 5: Solve for x
    x = 55,114,986.65/7,127.49
  6. Step 6: Final answer
    x = 7,732.73

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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.