Home / 3,507.58-5,260-1,315.11

Finding the Fourth Proportional to 3,507.58, 5,260 and 1,315.11

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Solution

The fourth proportional to 3,507.58, 5,260 and 1,315.11 is: 1,972.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,507.58 : 5,260 = 1,315.11 : x
  2. Step 2: Convert to fraction form
    3,507.58/5,260 = 1,315.11/x
  3. Step 3: Cross multiply
    3,507.58x = 5,260 × 1,315.11
  4. Step 4: Simplify right side
    3,507.58x = 6,917,478.60
  5. Step 5: Solve for x
    x = 6,917,478.60/3,507.58
  6. Step 6: Final answer
    x = 1,972.15

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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.