Home / 2,972.12-4,455.80-1,411.34

Finding the Fourth Proportional to 2,972.12, 4,455.80 and 1,411.34

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Solution

The fourth proportional to 2,972.12, 4,455.80 and 1,411.34 is: 2,115.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972.12 : 4,455.80 = 1,411.34 : x
  2. Step 2: Convert to fraction form
    2,972.12/4,455.80 = 1,411.34/x
  3. Step 3: Cross multiply
    2,972.12x = 4,455.80 × 1,411.34
  4. Step 4: Simplify right side
    2,972.12x = 6,288,648.77
  5. Step 5: Solve for x
    x = 6,288,648.77/2,972.12
  6. Step 6: Final answer
    x = 2,115.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.