Home / 2,129.40-3,194.58-975.48

Finding the Fourth Proportional to 2,129.40, 3,194.58 and 975.48

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Solution

The fourth proportional to 2,129.40, 3,194.58 and 975.48 is: 1,463.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.40 : 3,194.58 = 975.48 : x
  2. Step 2: Convert to fraction form
    2,129.40/3,194.58 = 975.48/x
  3. Step 3: Cross multiply
    2,129.40x = 3,194.58 × 975.48
  4. Step 4: Simplify right side
    2,129.40x = 3,116,248.90
  5. Step 5: Solve for x
    x = 3,116,248.90/2,129.40
  6. Step 6: Final answer
    x = 1,463.44

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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.