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Finding the Fourth Proportional to 6,487.96, 8,954.40 and 4,130.88

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Solution

The fourth proportional to 6,487.96, 8,954.40 and 4,130.88 is: 5,701.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,487.96 : 8,954.40 = 4,130.88 : x
  2. Step 2: Convert to fraction form
    6,487.96/8,954.40 = 4,130.88/x
  3. Step 3: Cross multiply
    6,487.96x = 8,954.40 × 4,130.88
  4. Step 4: Simplify right side
    6,487.96x = 36,989,551.87
  5. Step 5: Solve for x
    x = 36,989,551.87/6,487.96
  6. Step 6: Final answer
    x = 5,701.26

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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.