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Finding the Fourth Proportional to 2,880.39, 3,973.14 and 1,995.87

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Solution

The fourth proportional to 2,880.39, 3,973.14 and 1,995.87 is: 2,753.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880.39 : 3,973.14 = 1,995.87 : x
  2. Step 2: Convert to fraction form
    2,880.39/3,973.14 = 1,995.87/x
  3. Step 3: Cross multiply
    2,880.39x = 3,973.14 × 1,995.87
  4. Step 4: Simplify right side
    2,880.39x = 7,929,870.93
  5. Step 5: Solve for x
    x = 7,929,870.93/2,880.39
  6. Step 6: Final answer
    x = 2,753.05

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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.