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Finding the Fourth Proportional to 6,424.52, 8,865.80 and 3,630.20

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Solution

The fourth proportional to 6,424.52, 8,865.80 and 3,630.20 is: 5,009.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,424.52 : 8,865.80 = 3,630.20 : x
  2. Step 2: Convert to fraction form
    6,424.52/8,865.80 = 3,630.20/x
  3. Step 3: Cross multiply
    6,424.52x = 8,865.80 × 3,630.20
  4. Step 4: Simplify right side
    6,424.52x = 32,184,627.16
  5. Step 5: Solve for x
    x = 32,184,627.16/6,424.52
  6. Step 6: Final answer
    x = 5,009.65

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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.