Home / 3,509.50-5,263.21-1,658.78

Finding the Fourth Proportional to 3,509.50, 5,263.21 and 1,658.78

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Solution

The fourth proportional to 3,509.50, 5,263.21 and 1,658.78 is: 2,487.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,509.50 : 5,263.21 = 1,658.78 : x
  2. Step 2: Convert to fraction form
    3,509.50/5,263.21 = 1,658.78/x
  3. Step 3: Cross multiply
    3,509.50x = 5,263.21 × 1,658.78
  4. Step 4: Simplify right side
    3,509.50x = 8,730,507.48
  5. Step 5: Solve for x
    x = 8,730,507.48/3,509.50
  6. Step 6: Final answer
    x = 2,487.68

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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.