Home / 2,420.76-3,631.50-777.36

Finding the Fourth Proportional to 2,420.76, 3,631.50 and 777.36

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Solution

The fourth proportional to 2,420.76, 3,631.50 and 777.36 is: 1,166.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.76 : 3,631.50 = 777.36 : x
  2. Step 2: Convert to fraction form
    2,420.76/3,631.50 = 777.36/x
  3. Step 3: Cross multiply
    2,420.76x = 3,631.50 × 777.36
  4. Step 4: Simplify right side
    2,420.76x = 2,822,982.84
  5. Step 5: Solve for x
    x = 2,822,982.84/2,420.76
  6. Step 6: Final answer
    x = 1,166.16

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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.