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Finding the Fourth Proportional to 6,291.96, 8,681.58 and 3,497.40

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Solution

The fourth proportional to 6,291.96, 8,681.58 and 3,497.40 is: 4,825.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,291.96 : 8,681.58 = 3,497.40 : x
  2. Step 2: Convert to fraction form
    6,291.96/8,681.58 = 3,497.40/x
  3. Step 3: Cross multiply
    6,291.96x = 8,681.58 × 3,497.40
  4. Step 4: Simplify right side
    6,291.96x = 30,362,957.89
  5. Step 5: Solve for x
    x = 30,362,957.89/6,291.96
  6. Step 6: Final answer
    x = 4,825.68

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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.