Home / 5,160.70-7,121.80-2,802.84

Finding the Fourth Proportional to 5,160.70, 7,121.80 and 2,802.84

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Solution

The fourth proportional to 5,160.70, 7,121.80 and 2,802.84 is: 3,867.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.70 : 7,121.80 = 2,802.84 : x
  2. Step 2: Convert to fraction form
    5,160.70/7,121.80 = 2,802.84/x
  3. Step 3: Cross multiply
    5,160.70x = 7,121.80 × 2,802.84
  4. Step 4: Simplify right side
    5,160.70x = 19,961,216.29
  5. Step 5: Solve for x
    x = 19,961,216.29/5,160.70
  6. Step 6: Final answer
    x = 3,867.93

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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.