Home / 1,530.12-2,109.48-1,051.56

Finding the Fourth Proportional to 1,530.12, 2,109.48 and 1,051.56

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Solution

The fourth proportional to 1,530.12, 2,109.48 and 1,051.56 is: 1,449.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,530.12 : 2,109.48 = 1,051.56 : x
  2. Step 2: Convert to fraction form
    1,530.12/2,109.48 = 1,051.56/x
  3. Step 3: Cross multiply
    1,530.12x = 2,109.48 × 1,051.56
  4. Step 4: Simplify right side
    1,530.12x = 2,218,240.85
  5. Step 5: Solve for x
    x = 2,218,240.85/1,530.12
  6. Step 6: Final answer
    x = 1,449.71

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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.