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Finding the Fourth Proportional to 10,652.40, 15,978.77 and 4,410.91

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Solution

The fourth proportional to 10,652.40, 15,978.77 and 4,410.91 is: 6,616.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,652.40 : 15,978.77 = 4,410.91 : x
  2. Step 2: Convert to fraction form
    10,652.40/15,978.77 = 4,410.91/x
  3. Step 3: Cross multiply
    10,652.40x = 15,978.77 × 4,410.91
  4. Step 4: Simplify right side
    10,652.40x = 70,480,840.96
  5. Step 5: Solve for x
    x = 70,480,840.96/10,652.40
  6. Step 6: Final answer
    x = 6,616.43

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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.