Home / 5,160.09-7,120.95-2,802.22

Finding the Fourth Proportional to 5,160.09, 7,120.95 and 2,802.22

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Solution

The fourth proportional to 5,160.09, 7,120.95 and 2,802.22 is: 3,867.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.09 : 7,120.95 = 2,802.22 : x
  2. Step 2: Convert to fraction form
    5,160.09/7,120.95 = 2,802.22/x
  3. Step 3: Cross multiply
    5,160.09x = 7,120.95 × 2,802.22
  4. Step 4: Simplify right side
    5,160.09x = 19,954,468.51
  5. Step 5: Solve for x
    x = 19,954,468.51/5,160.09
  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.