Home / 5,160.63-7,121.69-2,802.77

Finding the Fourth Proportional to 5,160.63, 7,121.69 and 2,802.77

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Solution

The fourth proportional to 5,160.63, 7,121.69 and 2,802.77 is: 3,867.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.63 : 7,121.69 = 2,802.77 : x
  2. Step 2: Convert to fraction form
    5,160.63/7,121.69 = 2,802.77/x
  3. Step 3: Cross multiply
    5,160.63x = 7,121.69 × 2,802.77
  4. Step 4: Simplify right side
    5,160.63x = 19,960,459.08
  5. Step 5: Solve for x
    x = 19,960,459.08/5,160.63
  6. Step 6: Final answer
    x = 3,867.83

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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.