Home / 5,612.18-8,430.42-3,422.21

Finding the Fourth Proportional to 5,612.18, 8,430.42 and 3,422.21

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Solution

The fourth proportional to 5,612.18, 8,430.42 and 3,422.21 is: 5,140.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,612.18 : 8,430.42 = 3,422.21 : x
  2. Step 2: Convert to fraction form
    5,612.18/8,430.42 = 3,422.21/x
  3. Step 3: Cross multiply
    5,612.18x = 8,430.42 × 3,422.21
  4. Step 4: Simplify right side
    5,612.18x = 28,850,667.63
  5. Step 5: Solve for x
    x = 28,850,667.63/5,612.18
  6. Step 6: Final answer
    x = 5,140.72

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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.