Home / 1,529.12-2,109.48-1,004.96

Finding the Fourth Proportional to 1,529.12, 2,109.48 and 1,004.96

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Solution

The fourth proportional to 1,529.12, 2,109.48 and 1,004.96 is: 1,386.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,529.12 : 2,109.48 = 1,004.96 : x
  2. Step 2: Convert to fraction form
    1,529.12/2,109.48 = 1,004.96/x
  3. Step 3: Cross multiply
    1,529.12x = 2,109.48 × 1,004.96
  4. Step 4: Simplify right side
    1,529.12x = 2,119,943.02
  5. Step 5: Solve for x
    x = 2,119,943.02/1,529.12
  6. Step 6: Final answer
    x = 1,386.38

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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.