Home / 2,911.96-4,011.45-2,164.63

Finding the Fourth Proportional to 2,911.96, 4,011.45 and 2,164.63

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Solution

The fourth proportional to 2,911.96, 4,011.45 and 2,164.63 is: 2,981.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.96 : 4,011.45 = 2,164.63 : x
  2. Step 2: Convert to fraction form
    2,911.96/4,011.45 = 2,164.63/x
  3. Step 3: Cross multiply
    2,911.96x = 4,011.45 × 2,164.63
  4. Step 4: Simplify right side
    2,911.96x = 8,683,305.01
  5. Step 5: Solve for x
    x = 8,683,305.01/2,911.96
  6. Step 6: Final answer
    x = 2,981.95

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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.