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Finding the Fourth Proportional to 7,338.86, 10,128.21 and 4,354.82

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Solution

The fourth proportional to 7,338.86, 10,128.21 and 4,354.82 is: 6,010.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,338.86 : 10,128.21 = 4,354.82 : x
  2. Step 2: Convert to fraction form
    7,338.86/10,128.21 = 4,354.82/x
  3. Step 3: Cross multiply
    7,338.86x = 10,128.21 × 4,354.82
  4. Step 4: Simplify right side
    7,338.86x = 44,106,531.47
  5. Step 5: Solve for x
    x = 44,106,531.47/7,338.86
  6. Step 6: Final answer
    x = 6,010.00

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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.