Home / 8,427.45-12,639.15-2,503.20

Finding the Fourth Proportional to 8,427.45, 12,639.15 and 2,503.20

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Solution

The fourth proportional to 8,427.45, 12,639.15 and 2,503.20 is: 3,754.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,427.45 : 12,639.15 = 2,503.20 : x
  2. Step 2: Convert to fraction form
    8,427.45/12,639.15 = 2,503.20/x
  3. Step 3: Cross multiply
    8,427.45x = 12,639.15 × 2,503.20
  4. Step 4: Simplify right side
    8,427.45x = 31,638,320.28
  5. Step 5: Solve for x
    x = 31,638,320.28/8,427.45
  6. Step 6: Final answer
    x = 3,754.20

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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.