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Finding the Fourth Proportional to 7,393.84, 11,032.58 and 7,143.28

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Solution

The fourth proportional to 7,393.84, 11,032.58 and 7,143.28 is: 10,658.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,393.84 : 11,032.58 = 7,143.28 : x
  2. Step 2: Convert to fraction form
    7,393.84/11,032.58 = 7,143.28/x
  3. Step 3: Cross multiply
    7,393.84x = 11,032.58 × 7,143.28
  4. Step 4: Simplify right side
    7,393.84x = 78,808,808.06
  5. Step 5: Solve for x
    x = 78,808,808.06/7,393.84
  6. Step 6: Final answer
    x = 10,658.71

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Half scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.