Home / 3,506.45-5,261.70-1,315.40

Finding the Fourth Proportional to 3,506.45, 5,261.70 and 1,315.40

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Solution

The fourth proportional to 3,506.45, 5,261.70 and 1,315.40 is: 1,973.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,506.45 : 5,261.70 = 1,315.40 : x
  2. Step 2: Convert to fraction form
    3,506.45/5,261.70 = 1,315.40/x
  3. Step 3: Cross multiply
    3,506.45x = 5,261.70 × 1,315.40
  4. Step 4: Simplify right side
    3,506.45x = 6,921,240.18
  5. Step 5: Solve for x
    x = 6,921,240.18/3,506.45
  6. Step 6: Final answer
    x = 1,973.86

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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.