Home / 7,981.84-11,015-4,445.36

Finding the Fourth Proportional to 7,981.84, 11,015 and 4,445.36

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Solution

The fourth proportional to 7,981.84, 11,015 and 4,445.36 is: 6,134.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.84 : 11,015 = 4,445.36 : x
  2. Step 2: Convert to fraction form
    7,981.84/11,015 = 4,445.36/x
  3. Step 3: Cross multiply
    7,981.84x = 11,015 × 4,445.36
  4. Step 4: Simplify right side
    7,981.84x = 48,965,640.40
  5. Step 5: Solve for x
    x = 48,965,640.40/7,981.84
  6. Step 6: Final answer
    x = 6,134.63

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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.