Home / 1,533.64-2,118.90-1,069.96

Finding the Fourth Proportional to 1,533.64, 2,118.90 and 1,069.96

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Solution

The fourth proportional to 1,533.64, 2,118.90 and 1,069.96 is: 1,478.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,533.64 : 2,118.90 = 1,069.96 : x
  2. Step 2: Convert to fraction form
    1,533.64/2,118.90 = 1,069.96/x
  3. Step 3: Cross multiply
    1,533.64x = 2,118.90 × 1,069.96
  4. Step 4: Simplify right side
    1,533.64x = 2,267,138.24
  5. Step 5: Solve for x
    x = 2,267,138.24/1,533.64
  6. Step 6: Final answer
    x = 1,478.27

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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.