Home / 2,439.86-3,658.57-977.81

Finding the Fourth Proportional to 2,439.86, 3,658.57 and 977.81

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Solution

The fourth proportional to 2,439.86, 3,658.57 and 977.81 is: 1,466.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,439.86 : 3,658.57 = 977.81 : x
  2. Step 2: Convert to fraction form
    2,439.86/3,658.57 = 977.81/x
  3. Step 3: Cross multiply
    2,439.86x = 3,658.57 × 977.81
  4. Step 4: Simplify right side
    2,439.86x = 3,577,365.59
  5. Step 5: Solve for x
    x = 3,577,365.59/2,439.86
  6. Step 6: Final answer
    x = 1,466.22

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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.