Home / 7,478.54-11,219.64-3,780.69

Finding the Fourth Proportional to 7,478.54, 11,219.64 and 3,780.69

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Solution

The fourth proportional to 7,478.54, 11,219.64 and 3,780.69 is: 5,671.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,478.54 : 11,219.64 = 3,780.69 : x
  2. Step 2: Convert to fraction form
    7,478.54/11,219.64 = 3,780.69/x
  3. Step 3: Cross multiply
    7,478.54x = 11,219.64 × 3,780.69
  4. Step 4: Simplify right side
    7,478.54x = 42,417,980.75
  5. Step 5: Solve for x
    x = 42,417,980.75/7,478.54
  6. Step 6: Final answer
    x = 5,671.96

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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.