Home / 8,690.30-11,992.62-4,711.40

Finding the Fourth Proportional to 8,690.30, 11,992.62 and 4,711.40

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Solution

The fourth proportional to 8,690.30, 11,992.62 and 4,711.40 is: 6,501.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690.30 : 11,992.62 = 4,711.40 : x
  2. Step 2: Convert to fraction form
    8,690.30/11,992.62 = 4,711.40/x
  3. Step 3: Cross multiply
    8,690.30x = 11,992.62 × 4,711.40
  4. Step 4: Simplify right side
    8,690.30x = 56,502,029.87
  5. Step 5: Solve for x
    x = 56,502,029.87/8,690.30
  6. Step 6: Final answer
    x = 6,501.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.