Home / 5,318.64-7,975.56-1,621.32

Finding the Fourth Proportional to 5,318.64, 7,975.56 and 1,621.32

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Solution

The fourth proportional to 5,318.64, 7,975.56 and 1,621.32 is: 2,431.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318.64 : 7,975.56 = 1,621.32 : x
  2. Step 2: Convert to fraction form
    5,318.64/7,975.56 = 1,621.32/x
  3. Step 3: Cross multiply
    5,318.64x = 7,975.56 × 1,621.32
  4. Step 4: Simplify right side
    5,318.64x = 12,930,934.94
  5. Step 5: Solve for x
    x = 12,930,934.94/5,318.64
  6. Step 6: Final answer
    x = 2,431.25

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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.