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Finding the Fourth Proportional to 6,455.79, 9,686.10 and 2,073.60

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Solution

The fourth proportional to 6,455.79, 9,686.10 and 2,073.60 is: 3,111.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,455.79 : 9,686.10 = 2,073.60 : x
  2. Step 2: Convert to fraction form
    6,455.79/9,686.10 = 2,073.60/x
  3. Step 3: Cross multiply
    6,455.79x = 9,686.10 × 2,073.60
  4. Step 4: Simplify right side
    6,455.79x = 20,085,096.96
  5. Step 5: Solve for x
    x = 20,085,096.96/6,455.79
  6. Step 6: Final answer
    x = 3,111.18

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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.