Home / 3,870.35-5,341.17-2,191.76

Finding the Fourth Proportional to 3,870.35, 5,341.17 and 2,191.76

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Solution

The fourth proportional to 3,870.35, 5,341.17 and 2,191.76 is: 3,024.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,870.35 : 5,341.17 = 2,191.76 : x
  2. Step 2: Convert to fraction form
    3,870.35/5,341.17 = 2,191.76/x
  3. Step 3: Cross multiply
    3,870.35x = 5,341.17 × 2,191.76
  4. Step 4: Simplify right side
    3,870.35x = 11,706,564.30
  5. Step 5: Solve for x
    x = 11,706,564.30/3,870.35
  6. Step 6: Final answer
    x = 3,024.68

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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.