Home / 8,455.95-12,683.88-2,909.25

Finding the Fourth Proportional to 8,455.95, 12,683.88 and 2,909.25

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Solution

The fourth proportional to 8,455.95, 12,683.88 and 2,909.25 is: 4,363.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,455.95 : 12,683.88 = 2,909.25 : x
  2. Step 2: Convert to fraction form
    8,455.95/12,683.88 = 2,909.25/x
  3. Step 3: Cross multiply
    8,455.95x = 12,683.88 × 2,909.25
  4. Step 4: Simplify right side
    8,455.95x = 36,900,577.89
  5. Step 5: Solve for x
    x = 36,900,577.89/8,455.95
  6. Step 6: Final answer
    x = 4,363.86

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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.