Home / 8,431.84-11,635.88-4,655.00

Finding the Fourth Proportional to 8,431.84, 11,635.88 and 4,655.00

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Solution

The fourth proportional to 8,431.84, 11,635.88 and 4,655.00 is: 6,423.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.84 : 11,635.88 = 4,655.00 : x
  2. Step 2: Convert to fraction form
    8,431.84/11,635.88 = 4,655.00/x
  3. Step 3: Cross multiply
    8,431.84x = 11,635.88 × 4,655.00
  4. Step 4: Simplify right side
    8,431.84x = 54,165,027.21
  5. Step 5: Solve for x
    x = 54,165,027.21/8,431.84
  6. Step 6: Final answer
    x = 6,423.87

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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.