Home / 7,145.28-9,859.32-4,490.82

Finding the Fourth Proportional to 7,145.28, 9,859.32 and 4,490.82

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Solution

The fourth proportional to 7,145.28, 9,859.32 and 4,490.82 is: 6,196.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,145.28 : 9,859.32 = 4,490.82 : x
  2. Step 2: Convert to fraction form
    7,145.28/9,859.32 = 4,490.82/x
  3. Step 3: Cross multiply
    7,145.28x = 9,859.32 × 4,490.82
  4. Step 4: Simplify right side
    7,145.28x = 44,276,431.44
  5. Step 5: Solve for x
    x = 44,276,431.44/7,145.28
  6. Step 6: Final answer
    x = 6,196.60

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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.