Home / 8,681.64-11,950.20-7,685.16

Finding the Fourth Proportional to 8,681.64, 11,950.20 and 7,685.16

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Solution

The fourth proportional to 8,681.64, 11,950.20 and 7,685.16 is: 10,578.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,681.64 : 11,950.20 = 7,685.16 : x
  2. Step 2: Convert to fraction form
    8,681.64/11,950.20 = 7,685.16/x
  3. Step 3: Cross multiply
    8,681.64x = 11,950.20 × 7,685.16
  4. Step 4: Simplify right side
    8,681.64x = 91,839,199.03
  5. Step 5: Solve for x
    x = 91,839,199.03/8,681.64
  6. Step 6: Final answer
    x = 10,578.55

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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.