Home / 2,421.54-3,631.52-777.69

Finding the Fourth Proportional to 2,421.54, 3,631.52 and 777.69

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Solution

The fourth proportional to 2,421.54, 3,631.52 and 777.69 is: 1,166.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.54 : 3,631.52 = 777.69 : x
  2. Step 2: Convert to fraction form
    2,421.54/3,631.52 = 777.69/x
  3. Step 3: Cross multiply
    2,421.54x = 3,631.52 × 777.69
  4. Step 4: Simplify right side
    2,421.54x = 2,824,192.90
  5. Step 5: Solve for x
    x = 2,824,192.90/2,421.54
  6. Step 6: Final answer
    x = 1,166.28

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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.