Home / 8,930.40-12,320.01-6,279.54

Finding the Fourth Proportional to 8,930.40, 12,320.01 and 6,279.54

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Solution

The fourth proportional to 8,930.40, 12,320.01 and 6,279.54 is: 8,662.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,930.40 : 12,320.01 = 6,279.54 : x
  2. Step 2: Convert to fraction form
    8,930.40/12,320.01 = 6,279.54/x
  3. Step 3: Cross multiply
    8,930.40x = 12,320.01 × 6,279.54
  4. Step 4: Simplify right side
    8,930.40x = 77,363,995.60
  5. Step 5: Solve for x
    x = 77,363,995.60/8,930.40
  6. Step 6: Final answer
    x = 8,662.99

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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.