Home / 8,430.30-12,638.58-3,162.35

Finding the Fourth Proportional to 8,430.30, 12,638.58 and 3,162.35

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Solution

The fourth proportional to 8,430.30, 12,638.58 and 3,162.35 is: 4,740.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,430.30 : 12,638.58 = 3,162.35 : x
  2. Step 2: Convert to fraction form
    8,430.30/12,638.58 = 3,162.35/x
  3. Step 3: Cross multiply
    8,430.30x = 12,638.58 × 3,162.35
  4. Step 4: Simplify right side
    8,430.30x = 39,967,613.46
  5. Step 5: Solve for x
    x = 39,967,613.46/8,430.30
  6. Step 6: Final answer
    x = 4,740.95

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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.