Home / 9,780.62-13,497.09-5,588.78

Finding the Fourth Proportional to 9,780.62, 13,497.09 and 5,588.78

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Solution

The fourth proportional to 9,780.62, 13,497.09 and 5,588.78 is: 7,712.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,780.62 : 13,497.09 = 5,588.78 : x
  2. Step 2: Convert to fraction form
    9,780.62/13,497.09 = 5,588.78/x
  3. Step 3: Cross multiply
    9,780.62x = 13,497.09 × 5,588.78
  4. Step 4: Simplify right side
    9,780.62x = 75,432,279.43
  5. Step 5: Solve for x
    x = 75,432,279.43/9,780.62
  6. Step 6: Final answer
    x = 7,712.42

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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.