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Finding the Fourth Proportional to 8,405.07, 11,598.99 and 4,679.07

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Solution

The fourth proportional to 8,405.07, 11,598.99 and 4,679.07 is: 6,457.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,405.07 : 11,598.99 = 4,679.07 : x
  2. Step 2: Convert to fraction form
    8,405.07/11,598.99 = 4,679.07/x
  3. Step 3: Cross multiply
    8,405.07x = 11,598.99 × 4,679.07
  4. Step 4: Simplify right side
    8,405.07x = 54,272,486.14
  5. Step 5: Solve for x
    x = 54,272,486.14/8,405.07
  6. Step 6: Final answer
    x = 6,457.11

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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.