Home / 9,389.08-12,943.13-7,147.05

Finding the Fourth Proportional to 9,389.08, 12,943.13 and 7,147.05

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Solution

The fourth proportional to 9,389.08, 12,943.13 and 7,147.05 is: 9,852.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,389.08 : 12,943.13 = 7,147.05 : x
  2. Step 2: Convert to fraction form
    9,389.08/12,943.13 = 7,147.05/x
  3. Step 3: Cross multiply
    9,389.08x = 12,943.13 × 7,147.05
  4. Step 4: Simplify right side
    9,389.08x = 92,505,197.27
  5. Step 5: Solve for x
    x = 92,505,197.27/9,389.08
  6. Step 6: Final answer
    x = 9,852.42

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Half scale
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Double scale
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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.