Home / 2,705.11-4,051.79-1,315.52

Finding the Fourth Proportional to 2,705.11, 4,051.79 and 1,315.52

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Solution

The fourth proportional to 2,705.11, 4,051.79 and 1,315.52 is: 1,970.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,705.11 : 4,051.79 = 1,315.52 : x
  2. Step 2: Convert to fraction form
    2,705.11/4,051.79 = 1,315.52/x
  3. Step 3: Cross multiply
    2,705.11x = 4,051.79 × 1,315.52
  4. Step 4: Simplify right side
    2,705.11x = 5,330,210.78
  5. Step 5: Solve for x
    x = 5,330,210.78/2,705.11
  6. Step 6: Final answer
    x = 1,970.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.