Home / 4,814.40-6,643.20-2,689.84

Finding the Fourth Proportional to 4,814.40, 6,643.20 and 2,689.84

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Solution

The fourth proportional to 4,814.40, 6,643.20 and 2,689.84 is: 3,711.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,814.40 : 6,643.20 = 2,689.84 : x
  2. Step 2: Convert to fraction form
    4,814.40/6,643.20 = 2,689.84/x
  3. Step 3: Cross multiply
    4,814.40x = 6,643.20 × 2,689.84
  4. Step 4: Simplify right side
    4,814.40x = 17,869,145.09
  5. Step 5: Solve for x
    x = 17,869,145.09/4,814.40
  6. Step 6: Final answer
    x = 3,711.60

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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.