Home / 7,765.07-11,569.50-7,687.31

Finding the Fourth Proportional to 7,765.07, 11,569.50 and 7,687.31

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Solution

The fourth proportional to 7,765.07, 11,569.50 and 7,687.31 is: 11,453.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,765.07 : 11,569.50 = 7,687.31 : x
  2. Step 2: Convert to fraction form
    7,765.07/11,569.50 = 7,687.31/x
  3. Step 3: Cross multiply
    7,765.07x = 11,569.50 × 7,687.31
  4. Step 4: Simplify right side
    7,765.07x = 88,938,275.20
  5. Step 5: Solve for x
    x = 88,938,275.20/7,765.07
  6. Step 6: Final answer
    x = 11,453.64

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.