Home / 5,412.30-8,118.45-2,814.90

Finding the Fourth Proportional to 5,412.30, 8,118.45 and 2,814.90

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Solution

The fourth proportional to 5,412.30, 8,118.45 and 2,814.90 is: 4,222.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.30 : 8,118.45 = 2,814.90 : x
  2. Step 2: Convert to fraction form
    5,412.30/8,118.45 = 2,814.90/x
  3. Step 3: Cross multiply
    5,412.30x = 8,118.45 × 2,814.90
  4. Step 4: Simplify right side
    5,412.30x = 22,852,624.91
  5. Step 5: Solve for x
    x = 22,852,624.91/5,412.30
  6. Step 6: Final answer
    x = 4,222.35

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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.