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Finding the Fourth Proportional to 7,891.93, 10,890.80 and 4,488.93

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Solution

The fourth proportional to 7,891.93, 10,890.80 and 4,488.93 is: 6,194.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,891.93 : 10,890.80 = 4,488.93 : x
  2. Step 2: Convert to fraction form
    7,891.93/10,890.80 = 4,488.93/x
  3. Step 3: Cross multiply
    7,891.93x = 10,890.80 × 4,488.93
  4. Step 4: Simplify right side
    7,891.93x = 48,888,038.84
  5. Step 5: Solve for x
    x = 48,888,038.84/7,891.93
  6. Step 6: Final answer
    x = 6,194.69

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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.