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Finding the Fourth Proportional to 7,130.77, 9,843.05 and 5,367.47

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Solution

The fourth proportional to 7,130.77, 9,843.05 and 5,367.47 is: 7,409.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,130.77 : 9,843.05 = 5,367.47 : x
  2. Step 2: Convert to fraction form
    7,130.77/9,843.05 = 5,367.47/x
  3. Step 3: Cross multiply
    7,130.77x = 9,843.05 × 5,367.47
  4. Step 4: Simplify right side
    7,130.77x = 52,832,239.79
  5. Step 5: Solve for x
    x = 52,832,239.79/7,130.77
  6. Step 6: Final answer
    x = 7,409.05

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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.