Home / 8,271.40-12,415.20-4,116.10

Finding the Fourth Proportional to 8,271.40, 12,415.20 and 4,116.10

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Solution

The fourth proportional to 8,271.40, 12,415.20 and 4,116.10 is: 6,178.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,271.40 : 12,415.20 = 4,116.10 : x
  2. Step 2: Convert to fraction form
    8,271.40/12,415.20 = 4,116.10/x
  3. Step 3: Cross multiply
    8,271.40x = 12,415.20 × 4,116.10
  4. Step 4: Simplify right side
    8,271.40x = 51,102,204.72
  5. Step 5: Solve for x
    x = 51,102,204.72/8,271.40
  6. Step 6: Final answer
    x = 6,178.18

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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.