Home / 8,271.40-12,400.13-3,587.88

Finding the Fourth Proportional to 8,271.40, 12,400.13 and 3,587.88

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Solution

The fourth proportional to 8,271.40, 12,400.13 and 3,587.88 is: 5,378.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,271.40 : 12,400.13 = 3,587.88 : x
  2. Step 2: Convert to fraction form
    8,271.40/12,400.13 = 3,587.88/x
  3. Step 3: Cross multiply
    8,271.40x = 12,400.13 × 3,587.88
  4. Step 4: Simplify right side
    8,271.40x = 44,490,206.99
  5. Step 5: Solve for x
    x = 44,490,206.99/8,271.40
  6. Step 6: Final answer
    x = 5,378.80

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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.