Home / 4,813.64-6,642.75-2,689.21

Finding the Fourth Proportional to 4,813.64, 6,642.75 and 2,689.21

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Solution

The fourth proportional to 4,813.64, 6,642.75 and 2,689.21 is: 3,711.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,813.64 : 6,642.75 = 2,689.21 : x
  2. Step 2: Convert to fraction form
    4,813.64/6,642.75 = 2,689.21/x
  3. Step 3: Cross multiply
    4,813.64x = 6,642.75 × 2,689.21
  4. Step 4: Simplify right side
    4,813.64x = 17,863,733.12
  5. Step 5: Solve for x
    x = 17,863,733.12/4,813.64
  6. Step 6: Final answer
    x = 3,711.07

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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.