Home / 9,103.91-12,560.20-6,980.09

Finding the Fourth Proportional to 9,103.91, 12,560.20 and 6,980.09

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Solution

The fourth proportional to 9,103.91, 12,560.20 and 6,980.09 is: 9,630.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,103.91 : 12,560.20 = 6,980.09 : x
  2. Step 2: Convert to fraction form
    9,103.91/12,560.20 = 6,980.09/x
  3. Step 3: Cross multiply
    9,103.91x = 12,560.20 × 6,980.09
  4. Step 4: Simplify right side
    9,103.91x = 87,671,246.17
  5. Step 5: Solve for x
    x = 87,671,246.17/9,103.91
  6. Step 6: Final answer
    x = 9,630.07

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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.