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Finding the Fourth Proportional to 6,431.76, 8,875.62 and 3,637.26

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Solution

The fourth proportional to 6,431.76, 8,875.62 and 3,637.26 is: 5,019.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,431.76 : 8,875.62 = 3,637.26 : x
  2. Step 2: Convert to fraction form
    6,431.76/8,875.62 = 3,637.26/x
  3. Step 3: Cross multiply
    6,431.76x = 8,875.62 × 3,637.26
  4. Step 4: Simplify right side
    6,431.76x = 32,282,937.60
  5. Step 5: Solve for x
    x = 32,282,937.60/6,431.76
  6. Step 6: Final answer
    x = 5,019.30

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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.