Home / 4,977.20-7,456.80-2,374.40

Finding the Fourth Proportional to 4,977.20, 7,456.80 and 2,374.40

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Solution

The fourth proportional to 4,977.20, 7,456.80 and 2,374.40 is: 3,557.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,977.20 : 7,456.80 = 2,374.40 : x
  2. Step 2: Convert to fraction form
    4,977.20/7,456.80 = 2,374.40/x
  3. Step 3: Cross multiply
    4,977.20x = 7,456.80 × 2,374.40
  4. Step 4: Simplify right side
    4,977.20x = 17,705,425.92
  5. Step 5: Solve for x
    x = 17,705,425.92/4,977.20
  6. Step 6: Final answer
    x = 3,557.31

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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.