Home / 1,969.20-2,715.26-1,520.06

Finding the Fourth Proportional to 1,969.20, 2,715.26 and 1,520.06

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Solution

The fourth proportional to 1,969.20, 2,715.26 and 1,520.06 is: 2,095.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,969.20 : 2,715.26 = 1,520.06 : x
  2. Step 2: Convert to fraction form
    1,969.20/2,715.26 = 1,520.06/x
  3. Step 3: Cross multiply
    1,969.20x = 2,715.26 × 1,520.06
  4. Step 4: Simplify right side
    1,969.20x = 4,127,358.12
  5. Step 5: Solve for x
    x = 4,127,358.12/1,969.20
  6. Step 6: Final answer
    x = 2,095.96

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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.