Home / 8,915.61-13,368.92-5,218.95

Finding the Fourth Proportional to 8,915.61, 13,368.92 and 5,218.95

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Solution

The fourth proportional to 8,915.61, 13,368.92 and 5,218.95 is: 7,825.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.61 : 13,368.92 = 5,218.95 : x
  2. Step 2: Convert to fraction form
    8,915.61/13,368.92 = 5,218.95/x
  3. Step 3: Cross multiply
    8,915.61x = 13,368.92 × 5,218.95
  4. Step 4: Simplify right side
    8,915.61x = 69,771,698.94
  5. Step 5: Solve for x
    x = 69,771,698.94/8,915.61
  6. Step 6: Final answer
    x = 7,825.79

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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.