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Finding the Fourth Proportional to 7,279.74, 10,043.19 and 4,480.38

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Solution

The fourth proportional to 7,279.74, 10,043.19 and 4,480.38 is: 6,181.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,279.74 : 10,043.19 = 4,480.38 : x
  2. Step 2: Convert to fraction form
    7,279.74/10,043.19 = 4,480.38/x
  3. Step 3: Cross multiply
    7,279.74x = 10,043.19 × 4,480.38
  4. Step 4: Simplify right side
    7,279.74x = 44,997,307.61
  5. Step 5: Solve for x
    x = 44,997,307.61/7,279.74
  6. Step 6: Final answer
    x = 6,181.17

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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.