Home / 9,320.47-13,988.90-7,860.65

Finding the Fourth Proportional to 9,320.47, 13,988.90 and 7,860.65

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Solution

The fourth proportional to 9,320.47, 13,988.90 and 7,860.65 is: 11,797.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,320.47 : 13,988.90 = 7,860.65 : x
  2. Step 2: Convert to fraction form
    9,320.47/13,988.90 = 7,860.65/x
  3. Step 3: Cross multiply
    9,320.47x = 13,988.90 × 7,860.65
  4. Step 4: Simplify right side
    9,320.47x = 109,961,796.49
  5. Step 5: Solve for x
    x = 109,961,796.49/9,320.47
  6. Step 6: Final answer
    x = 11,797.88

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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.