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Finding the Fourth Proportional to 2,875.58, 3,969.92 and 1,881.88

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Solution

The fourth proportional to 2,875.58, 3,969.92 and 1,881.88 is: 2,598.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,875.58 : 3,969.92 = 1,881.88 : x
  2. Step 2: Convert to fraction form
    2,875.58/3,969.92 = 1,881.88/x
  3. Step 3: Cross multiply
    2,875.58x = 3,969.92 × 1,881.88
  4. Step 4: Simplify right side
    2,875.58x = 7,470,913.05
  5. Step 5: Solve for x
    x = 7,470,913.05/2,875.58
  6. Step 6: Final answer
    x = 2,598.05

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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.