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Finding the Fourth Proportional to 2,886.76, 3,981.54 and 2,048.68

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Solution

The fourth proportional to 2,886.76, 3,981.54 and 2,048.68 is: 2,825.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,886.76 : 3,981.54 = 2,048.68 : x
  2. Step 2: Convert to fraction form
    2,886.76/3,981.54 = 2,048.68/x
  3. Step 3: Cross multiply
    2,886.76x = 3,981.54 × 2,048.68
  4. Step 4: Simplify right side
    2,886.76x = 8,156,901.37
  5. Step 5: Solve for x
    x = 8,156,901.37/2,886.76
  6. Step 6: Final answer
    x = 2,825.63

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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.