Home / 2,421.73-3,631.85-777.83

Finding the Fourth Proportional to 2,421.73, 3,631.85 and 777.83

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Solution

The fourth proportional to 2,421.73, 3,631.85 and 777.83 is: 1,166.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.73 : 3,631.85 = 777.83 : x
  2. Step 2: Convert to fraction form
    2,421.73/3,631.85 = 777.83/x
  3. Step 3: Cross multiply
    2,421.73x = 3,631.85 × 777.83
  4. Step 4: Simplify right side
    2,421.73x = 2,824,969.99
  5. Step 5: Solve for x
    x = 2,824,969.99/2,421.73
  6. Step 6: Final answer
    x = 1,166.51

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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.