Home / 10,485.90-15,731.10-3,089.70

Finding the Fourth Proportional to 10,485.90, 15,731.10 and 3,089.70

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Solution

The fourth proportional to 10,485.90, 15,731.10 and 3,089.70 is: 4,635.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,485.90 : 15,731.10 = 3,089.70 : x
  2. Step 2: Convert to fraction form
    10,485.90/15,731.10 = 3,089.70/x
  3. Step 3: Cross multiply
    10,485.90x = 15,731.10 × 3,089.70
  4. Step 4: Simplify right side
    10,485.90x = 48,604,379.67
  5. Step 5: Solve for x
    x = 48,604,379.67/10,485.90
  6. Step 6: Final answer
    x = 4,635.21

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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.