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Finding the Fourth Proportional to 7,638.40, 10,541.04 and 4,281.05

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Solution

The fourth proportional to 7,638.40, 10,541.04 and 4,281.05 is: 5,907.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,638.40 : 10,541.04 = 4,281.05 : x
  2. Step 2: Convert to fraction form
    7,638.40/10,541.04 = 4,281.05/x
  3. Step 3: Cross multiply
    7,638.40x = 10,541.04 × 4,281.05
  4. Step 4: Simplify right side
    7,638.40x = 45,126,729.59
  5. Step 5: Solve for x
    x = 45,126,729.59/7,638.40
  6. Step 6: Final answer
    x = 5,907.88

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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.