Home / 5,160.14-7,120.88-2,802.28

Finding the Fourth Proportional to 5,160.14, 7,120.88 and 2,802.28

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Solution

The fourth proportional to 5,160.14, 7,120.88 and 2,802.28 is: 3,867.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.14 : 7,120.88 = 2,802.28 : x
  2. Step 2: Convert to fraction form
    5,160.14/7,120.88 = 2,802.28/x
  3. Step 3: Cross multiply
    5,160.14x = 7,120.88 × 2,802.28
  4. Step 4: Simplify right side
    5,160.14x = 19,954,699.61
  5. Step 5: Solve for x
    x = 19,954,699.61/5,160.14
  6. Step 6: Final answer
    x = 3,867.08

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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.