Home / 7,685.31-11,531.58-3,985.53

Finding the Fourth Proportional to 7,685.31, 11,531.58 and 3,985.53

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Solution

The fourth proportional to 7,685.31, 11,531.58 and 3,985.53 is: 5,980.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,685.31 : 11,531.58 = 3,985.53 : x
  2. Step 2: Convert to fraction form
    7,685.31/11,531.58 = 3,985.53/x
  3. Step 3: Cross multiply
    7,685.31x = 11,531.58 × 3,985.53
  4. Step 4: Simplify right side
    7,685.31x = 45,959,458.04
  5. Step 5: Solve for x
    x = 45,959,458.04/7,685.31
  6. Step 6: Final answer
    x = 5,980.17

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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.