Home / 5,160.30-7,121.22-2,802.46

Finding the Fourth Proportional to 5,160.30, 7,121.22 and 2,802.46

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Solution

The fourth proportional to 5,160.30, 7,121.22 and 2,802.46 is: 3,867.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.30 : 7,121.22 = 2,802.46 : x
  2. Step 2: Convert to fraction form
    5,160.30/7,121.22 = 2,802.46/x
  3. Step 3: Cross multiply
    5,160.30x = 7,121.22 × 2,802.46
  4. Step 4: Simplify right side
    5,160.30x = 19,956,934.20
  5. Step 5: Solve for x
    x = 19,956,934.20/5,160.30
  6. Step 6: Final answer
    x = 3,867.40

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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.