Home / 4,947.80-7,421.70-2,355.80

Finding the Fourth Proportional to 4,947.80, 7,421.70 and 2,355.80

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Solution

The fourth proportional to 4,947.80, 7,421.70 and 2,355.80 is: 3,533.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,947.80 : 7,421.70 = 2,355.80 : x
  2. Step 2: Convert to fraction form
    4,947.80/7,421.70 = 2,355.80/x
  3. Step 3: Cross multiply
    4,947.80x = 7,421.70 × 2,355.80
  4. Step 4: Simplify right side
    4,947.80x = 17,484,040.86
  5. Step 5: Solve for x
    x = 17,484,040.86/4,947.80
  6. Step 6: Final answer
    x = 3,533.70

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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.