Home / 8,427.50-12,641.20-2,187.51

Finding the Fourth Proportional to 8,427.50, 12,641.20 and 2,187.51

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Solution

The fourth proportional to 8,427.50, 12,641.20 and 2,187.51 is: 3,281.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,427.50 : 12,641.20 = 2,187.51 : x
  2. Step 2: Convert to fraction form
    8,427.50/12,641.20 = 2,187.51/x
  3. Step 3: Cross multiply
    8,427.50x = 12,641.20 × 2,187.51
  4. Step 4: Simplify right side
    8,427.50x = 27,652,751.41
  5. Step 5: Solve for x
    x = 27,652,751.41/8,427.50
  6. Step 6: Final answer
    x = 3,281.25

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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.