Home / 5,160.24-7,121.10-2,802.36

Finding the Fourth Proportional to 5,160.24, 7,121.10 and 2,802.36

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Solution

The fourth proportional to 5,160.24, 7,121.10 and 2,802.36 is: 3,867.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.24 : 7,121.10 = 2,802.36 : x
  2. Step 2: Convert to fraction form
    5,160.24/7,121.10 = 2,802.36/x
  3. Step 3: Cross multiply
    5,160.24x = 7,121.10 × 2,802.36
  4. Step 4: Simplify right side
    5,160.24x = 19,955,885.80
  5. Step 5: Solve for x
    x = 19,955,885.80/5,160.24
  6. Step 6: Final answer
    x = 3,867.24

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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.