Home / 5,160.84-7,121.97-2,802.99

Finding the Fourth Proportional to 5,160.84, 7,121.97 and 2,802.99

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Solution

The fourth proportional to 5,160.84, 7,121.97 and 2,802.99 is: 3,868.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.84 : 7,121.97 = 2,802.99 : x
  2. Step 2: Convert to fraction form
    5,160.84/7,121.97 = 2,802.99/x
  3. Step 3: Cross multiply
    5,160.84x = 7,121.97 × 2,802.99
  4. Step 4: Simplify right side
    5,160.84x = 19,962,810.69
  5. Step 5: Solve for x
    x = 19,962,810.69/5,160.84
  6. Step 6: Final answer
    x = 3,868.13

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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.