Home / 8,711.65-12,020.69-5,126.79

Finding the Fourth Proportional to 8,711.65, 12,020.69 and 5,126.79

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Solution

The fourth proportional to 8,711.65, 12,020.69 and 5,126.79 is: 7,074.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,711.65 : 12,020.69 = 5,126.79 : x
  2. Step 2: Convert to fraction form
    8,711.65/12,020.69 = 5,126.79/x
  3. Step 3: Cross multiply
    8,711.65x = 12,020.69 × 5,126.79
  4. Step 4: Simplify right side
    8,711.65x = 61,627,527.65
  5. Step 5: Solve for x
    x = 61,627,527.65/8,711.65
  6. Step 6: Final answer
    x = 7,074.16

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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.