Home / 2,420.92-3,631.38-777.58

Finding the Fourth Proportional to 2,420.92, 3,631.38 and 777.58

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Solution

The fourth proportional to 2,420.92, 3,631.38 and 777.58 is: 1,166.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.92 : 3,631.38 = 777.58 : x
  2. Step 2: Convert to fraction form
    2,420.92/3,631.38 = 777.58/x
  3. Step 3: Cross multiply
    2,420.92x = 3,631.38 × 777.58
  4. Step 4: Simplify right side
    2,420.92x = 2,823,688.46
  5. Step 5: Solve for x
    x = 2,823,688.46/2,420.92
  6. Step 6: Final answer
    x = 1,166.37

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1.5x scale

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.