Home / 7,647.63-10,553.56-4,290.38

Finding the Fourth Proportional to 7,647.63, 10,553.56 and 4,290.38

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Solution

The fourth proportional to 7,647.63, 10,553.56 and 4,290.38 is: 5,920.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,647.63 : 10,553.56 = 4,290.38 : x
  2. Step 2: Convert to fraction form
    7,647.63/10,553.56 = 4,290.38/x
  3. Step 3: Cross multiply
    7,647.63x = 10,553.56 × 4,290.38
  4. Step 4: Simplify right side
    7,647.63x = 45,278,708.53
  5. Step 5: Solve for x
    x = 45,278,708.53/7,647.63
  6. Step 6: Final answer
    x = 5,920.62

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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.