Home / 7,159.34-10,739.75-1,965.21

Finding the Fourth Proportional to 7,159.34, 10,739.75 and 1,965.21

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Solution

The fourth proportional to 7,159.34, 10,739.75 and 1,965.21 is: 2,948.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,159.34 : 10,739.75 = 1,965.21 : x
  2. Step 2: Convert to fraction form
    7,159.34/10,739.75 = 1,965.21/x
  3. Step 3: Cross multiply
    7,159.34x = 10,739.75 × 1,965.21
  4. Step 4: Simplify right side
    7,159.34x = 21,105,854.27
  5. Step 5: Solve for x
    x = 21,105,854.27/7,159.34
  6. Step 6: Final answer
    x = 2,948.02

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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.