Home / 5,210.97-7,191.15-2,820.93

Finding the Fourth Proportional to 5,210.97, 7,191.15 and 2,820.93

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Solution

The fourth proportional to 5,210.97, 7,191.15 and 2,820.93 is: 3,892.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,210.97 : 7,191.15 = 2,820.93 : x
  2. Step 2: Convert to fraction form
    5,210.97/7,191.15 = 2,820.93/x
  3. Step 3: Cross multiply
    5,210.97x = 7,191.15 × 2,820.93
  4. Step 4: Simplify right side
    5,210.97x = 20,285,730.77
  5. Step 5: Solve for x
    x = 20,285,730.77/5,210.97
  6. Step 6: Final answer
    x = 3,892.89

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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.