Home / 3,506.89-5,259.58-1,315.78

Finding the Fourth Proportional to 3,506.89, 5,259.58 and 1,315.78

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Solution

The fourth proportional to 3,506.89, 5,259.58 and 1,315.78 is: 1,973.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,506.89 : 5,259.58 = 1,315.78 : x
  2. Step 2: Convert to fraction form
    3,506.89/5,259.58 = 1,315.78/x
  3. Step 3: Cross multiply
    3,506.89x = 5,259.58 × 1,315.78
  4. Step 4: Simplify right side
    3,506.89x = 6,920,450.17
  5. Step 5: Solve for x
    x = 6,920,450.17/3,506.89
  6. Step 6: Final answer
    x = 1,973.39

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1.5x scale

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.