Home / 9,128.40-12,597.15-4,936.65

Finding the Fourth Proportional to 9,128.40, 12,597.15 and 4,936.65

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Solution

The fourth proportional to 9,128.40, 12,597.15 and 4,936.65 is: 6,812.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,128.40 : 12,597.15 = 4,936.65 : x
  2. Step 2: Convert to fraction form
    9,128.40/12,597.15 = 4,936.65/x
  3. Step 3: Cross multiply
    9,128.40x = 12,597.15 × 4,936.65
  4. Step 4: Simplify right side
    9,128.40x = 62,187,720.55
  5. Step 5: Solve for x
    x = 62,187,720.55/9,128.40
  6. Step 6: Final answer
    x = 6,812.55

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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.