Home / 1,455.30-2,009.10-1,155.96

Finding the Fourth Proportional to 1,455.30, 2,009.10 and 1,155.96

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Solution

The fourth proportional to 1,455.30, 2,009.10 and 1,155.96 is: 1,595.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455.30 : 2,009.10 = 1,155.96 : x
  2. Step 2: Convert to fraction form
    1,455.30/2,009.10 = 1,155.96/x
  3. Step 3: Cross multiply
    1,455.30x = 2,009.10 × 1,155.96
  4. Step 4: Simplify right side
    1,455.30x = 2,322,439.24
  5. Step 5: Solve for x
    x = 2,322,439.24/1,455.30
  6. Step 6: Final answer
    x = 1,595.85

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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.