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Finding the Fourth Proportional to 10,901.40, 16,352.10 and 3,978.60

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Solution

The fourth proportional to 10,901.40, 16,352.10 and 3,978.60 is: 5,967.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,901.40 : 16,352.10 = 3,978.60 : x
  2. Step 2: Convert to fraction form
    10,901.40/16,352.10 = 3,978.60/x
  3. Step 3: Cross multiply
    10,901.40x = 16,352.10 × 3,978.60
  4. Step 4: Simplify right side
    10,901.40x = 65,058,465.06
  5. Step 5: Solve for x
    x = 65,058,465.06/10,901.40
  6. Step 6: Final answer
    x = 5,967.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.