Home / 2,486.70-3,428.58-2,089.92

Finding the Fourth Proportional to 2,486.70, 3,428.58 and 2,089.92

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Solution

The fourth proportional to 2,486.70, 3,428.58 and 2,089.92 is: 2,881.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,486.70 : 3,428.58 = 2,089.92 : x
  2. Step 2: Convert to fraction form
    2,486.70/3,428.58 = 2,089.92/x
  3. Step 3: Cross multiply
    2,486.70x = 3,428.58 × 2,089.92
  4. Step 4: Simplify right side
    2,486.70x = 7,165,457.91
  5. Step 5: Solve for x
    x = 7,165,457.91/2,486.70
  6. Step 6: Final answer
    x = 2,881.51

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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.