Home / 8,445.30-12,675.70-4,288.20

Finding the Fourth Proportional to 8,445.30, 12,675.70 and 4,288.20

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Solution

The fourth proportional to 8,445.30, 12,675.70 and 4,288.20 is: 6,436.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,445.30 : 12,675.70 = 4,288.20 : x
  2. Step 2: Convert to fraction form
    8,445.30/12,675.70 = 4,288.20/x
  3. Step 3: Cross multiply
    8,445.30x = 12,675.70 × 4,288.20
  4. Step 4: Simplify right side
    8,445.30x = 54,355,936.74
  5. Step 5: Solve for x
    x = 54,355,936.74/8,445.30
  6. Step 6: Final answer
    x = 6,436.24

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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.