Home / 2,439.80-3,658.35-977.30

Finding the Fourth Proportional to 2,439.80, 3,658.35 and 977.30

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Solution

The fourth proportional to 2,439.80, 3,658.35 and 977.30 is: 1,465.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,439.80 : 3,658.35 = 977.30 : x
  2. Step 2: Convert to fraction form
    2,439.80/3,658.35 = 977.30/x
  3. Step 3: Cross multiply
    2,439.80x = 3,658.35 × 977.30
  4. Step 4: Simplify right side
    2,439.80x = 3,575,305.46
  5. Step 5: Solve for x
    x = 3,575,305.46/2,439.80
  6. Step 6: Final answer
    x = 1,465.41

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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.