Home / 5,160.90-7,121.93-2,802.99

Finding the Fourth Proportional to 5,160.90, 7,121.93 and 2,802.99

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Solution

The fourth proportional to 5,160.90, 7,121.93 and 2,802.99 is: 3,868.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.90 : 7,121.93 = 2,802.99 : x
  2. Step 2: Convert to fraction form
    5,160.90/7,121.93 = 2,802.99/x
  3. Step 3: Cross multiply
    5,160.90x = 7,121.93 × 2,802.99
  4. Step 4: Simplify right side
    5,160.90x = 19,962,684.56
  5. Step 5: Solve for x
    x = 19,962,684.56/5,160.90
  6. Step 6: Final answer
    x = 3,868.06

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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.