Home / 5,619.32-7,756.01-3,380.78

Finding the Fourth Proportional to 5,619.32, 7,756.01 and 3,380.78

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Solution

The fourth proportional to 5,619.32, 7,756.01 and 3,380.78 is: 4,666.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,619.32 : 7,756.01 = 3,380.78 : x
  2. Step 2: Convert to fraction form
    5,619.32/7,756.01 = 3,380.78/x
  3. Step 3: Cross multiply
    5,619.32x = 7,756.01 × 3,380.78
  4. Step 4: Simplify right side
    5,619.32x = 26,221,326.49
  5. Step 5: Solve for x
    x = 26,221,326.49/5,619.32
  6. Step 6: Final answer
    x = 4,666.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.