Home / 1,528.29-2,109.11-1,004.85

Finding the Fourth Proportional to 1,528.29, 2,109.11 and 1,004.85

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Solution

The fourth proportional to 1,528.29, 2,109.11 and 1,004.85 is: 1,386.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528.29 : 2,109.11 = 1,004.85 : x
  2. Step 2: Convert to fraction form
    1,528.29/2,109.11 = 1,004.85/x
  3. Step 3: Cross multiply
    1,528.29x = 2,109.11 × 1,004.85
  4. Step 4: Simplify right side
    1,528.29x = 2,119,334.16
  5. Step 5: Solve for x
    x = 2,119,334.16/1,528.29
  6. Step 6: Final answer
    x = 1,386.74

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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.