Home / 8,431.55-12,647.40-3,750.29

Finding the Fourth Proportional to 8,431.55, 12,647.40 and 3,750.29

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Solution

The fourth proportional to 8,431.55, 12,647.40 and 3,750.29 is: 5,625.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.55 : 12,647.40 = 3,750.29 : x
  2. Step 2: Convert to fraction form
    8,431.55/12,647.40 = 3,750.29/x
  3. Step 3: Cross multiply
    8,431.55x = 12,647.40 × 3,750.29
  4. Step 4: Simplify right side
    8,431.55x = 47,431,417.75
  5. Step 5: Solve for x
    x = 47,431,417.75/8,431.55
  6. Step 6: Final answer
    x = 5,625.47

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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.