Home / 4,378.32-6,557.40-2,643.12

Finding the Fourth Proportional to 4,378.32, 6,557.40 and 2,643.12

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Solution

The fourth proportional to 4,378.32, 6,557.40 and 2,643.12 is: 3,958.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,378.32 : 6,557.40 = 2,643.12 : x
  2. Step 2: Convert to fraction form
    4,378.32/6,557.40 = 2,643.12/x
  3. Step 3: Cross multiply
    4,378.32x = 6,557.40 × 2,643.12
  4. Step 4: Simplify right side
    4,378.32x = 17,331,995.09
  5. Step 5: Solve for x
    x = 17,331,995.09/4,378.32
  6. Step 6: Final answer
    x = 3,958.59

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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.