Home / 8,430.84-12,646.88-3,236.72

Finding the Fourth Proportional to 8,430.84, 12,646.88 and 3,236.72

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Solution

The fourth proportional to 8,430.84, 12,646.88 and 3,236.72 is: 4,855.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,430.84 : 12,646.88 = 3,236.72 : x
  2. Step 2: Convert to fraction form
    8,430.84/12,646.88 = 3,236.72/x
  3. Step 3: Cross multiply
    8,430.84x = 12,646.88 × 3,236.72
  4. Step 4: Simplify right side
    8,430.84x = 40,934,330.02
  5. Step 5: Solve for x
    x = 40,934,330.02/8,430.84
  6. Step 6: Final answer
    x = 4,855.31

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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.