Home / 4,621.32-6,379.32-3,131.28

Finding the Fourth Proportional to 4,621.32, 6,379.32 and 3,131.28

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Solution

The fourth proportional to 4,621.32, 6,379.32 and 3,131.28 is: 4,322.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,621.32 : 6,379.32 = 3,131.28 : x
  2. Step 2: Convert to fraction form
    4,621.32/6,379.32 = 3,131.28/x
  3. Step 3: Cross multiply
    4,621.32x = 6,379.32 × 3,131.28
  4. Step 4: Simplify right side
    4,621.32x = 19,975,437.13
  5. Step 5: Solve for x
    x = 19,975,437.13/4,621.32
  6. Step 6: Final answer
    x = 4,322.45

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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.