Home / 8,681.12-11,979.21-5,095.68

Finding the Fourth Proportional to 8,681.12, 11,979.21 and 5,095.68

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Solution

The fourth proportional to 8,681.12, 11,979.21 and 5,095.68 is: 7,031.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,681.12 : 11,979.21 = 5,095.68 : x
  2. Step 2: Convert to fraction form
    8,681.12/11,979.21 = 5,095.68/x
  3. Step 3: Cross multiply
    8,681.12x = 11,979.21 × 5,095.68
  4. Step 4: Simplify right side
    8,681.12x = 61,042,220.81
  5. Step 5: Solve for x
    x = 61,042,220.81/8,681.12
  6. Step 6: Final answer
    x = 7,031.61

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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.