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Finding the Fourth Proportional to 8,303.79, 12,457.74 and 6,839.87

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Solution

The fourth proportional to 8,303.79, 12,457.74 and 6,839.87 is: 10,261.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,303.79 : 12,457.74 = 6,839.87 : x
  2. Step 2: Convert to fraction form
    8,303.79/12,457.74 = 6,839.87/x
  3. Step 3: Cross multiply
    8,303.79x = 12,457.74 × 6,839.87
  4. Step 4: Simplify right side
    8,303.79x = 85,209,272.40
  5. Step 5: Solve for x
    x = 85,209,272.40/8,303.79
  6. Step 6: Final answer
    x = 10,261.49

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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.