Home / 6,423.11-9,634.70-1,980.72

Finding the Fourth Proportional to 6,423.11, 9,634.70 and 1,980.72

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Solution

The fourth proportional to 6,423.11, 9,634.70 and 1,980.72 is: 2,971.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,423.11 : 9,634.70 = 1,980.72 : x
  2. Step 2: Convert to fraction form
    6,423.11/9,634.70 = 1,980.72/x
  3. Step 3: Cross multiply
    6,423.11x = 9,634.70 × 1,980.72
  4. Step 4: Simplify right side
    6,423.11x = 19,083,642.98
  5. Step 5: Solve for x
    x = 19,083,642.98/6,423.11
  6. Step 6: Final answer
    x = 2,971.09

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Double scale
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Similar ratio
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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.