Home / 8,316.10-12,474.15-3,121.30

Finding the Fourth Proportional to 8,316.10, 12,474.15 and 3,121.30

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Solution

The fourth proportional to 8,316.10, 12,474.15 and 3,121.30 is: 4,681.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,316.10 : 12,474.15 = 3,121.30 : x
  2. Step 2: Convert to fraction form
    8,316.10/12,474.15 = 3,121.30/x
  3. Step 3: Cross multiply
    8,316.10x = 12,474.15 × 3,121.30
  4. Step 4: Simplify right side
    8,316.10x = 38,935,564.40
  5. Step 5: Solve for x
    x = 38,935,564.40/8,316.10
  6. Step 6: Final answer
    x = 4,681.95

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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.