Home / 8,690.79-13,038.21-4,745.82

Finding the Fourth Proportional to 8,690.79, 13,038.21 and 4,745.82

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Solution

The fourth proportional to 8,690.79, 13,038.21 and 4,745.82 is: 7,119.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690.79 : 13,038.21 = 4,745.82 : x
  2. Step 2: Convert to fraction form
    8,690.79/13,038.21 = 4,745.82/x
  3. Step 3: Cross multiply
    8,690.79x = 13,038.21 × 4,745.82
  4. Step 4: Simplify right side
    8,690.79x = 61,876,997.78
  5. Step 5: Solve for x
    x = 61,876,997.78/8,690.79
  6. Step 6: Final answer
    x = 7,119.84

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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.