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Finding the Fourth Proportional to 7,953.99, 11,931 and 3,569.07

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Solution

The fourth proportional to 7,953.99, 11,931 and 3,569.07 is: 5,353.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,953.99 : 11,931 = 3,569.07 : x
  2. Step 2: Convert to fraction form
    7,953.99/11,931 = 3,569.07/x
  3. Step 3: Cross multiply
    7,953.99x = 11,931 × 3,569.07
  4. Step 4: Simplify right side
    7,953.99x = 42,582,574.17
  5. Step 5: Solve for x
    x = 42,582,574.17/7,953.99
  6. Step 6: Final answer
    x = 5,353.61

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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.