Home / 8,572.40-12,853.98-3,889.86

Finding the Fourth Proportional to 8,572.40, 12,853.98 and 3,889.86

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Solution

The fourth proportional to 8,572.40, 12,853.98 and 3,889.86 is: 5,832.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,572.40 : 12,853.98 = 3,889.86 : x
  2. Step 2: Convert to fraction form
    8,572.40/12,853.98 = 3,889.86/x
  3. Step 3: Cross multiply
    8,572.40x = 12,853.98 × 3,889.86
  4. Step 4: Simplify right side
    8,572.40x = 50,000,182.64
  5. Step 5: Solve for x
    x = 50,000,182.64/8,572.40
  6. Step 6: Final answer
    x = 5,832.69

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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.