Home / 8,316.72-11,479.05-5,339.61

Finding the Fourth Proportional to 8,316.72, 11,479.05 and 5,339.61

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Solution

The fourth proportional to 8,316.72, 11,479.05 and 5,339.61 is: 7,369.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,316.72 : 11,479.05 = 5,339.61 : x
  2. Step 2: Convert to fraction form
    8,316.72/11,479.05 = 5,339.61/x
  3. Step 3: Cross multiply
    8,316.72x = 11,479.05 × 5,339.61
  4. Step 4: Simplify right side
    8,316.72x = 61,293,650.17
  5. Step 5: Solve for x
    x = 61,293,650.17/8,316.72
  6. Step 6: Final answer
    x = 7,369.93

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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.