Home / 1,411.12-2,115.18-533.20

Finding the Fourth Proportional to 1,411.12, 2,115.18 and 533.20

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Solution

The fourth proportional to 1,411.12, 2,115.18 and 533.20 is: 799.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,411.12 : 2,115.18 = 533.20 : x
  2. Step 2: Convert to fraction form
    1,411.12/2,115.18 = 533.20/x
  3. Step 3: Cross multiply
    1,411.12x = 2,115.18 × 533.20
  4. Step 4: Simplify right side
    1,411.12x = 1,127,813.98
  5. Step 5: Solve for x
    x = 1,127,813.98/1,411.12
  6. Step 6: Final answer
    x = 799.23

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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.