Home / 3,539.10-4,880.16-2,638.77

Finding the Fourth Proportional to 3,539.10, 4,880.16 and 2,638.77

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Solution

The fourth proportional to 3,539.10, 4,880.16 and 2,638.77 is: 3,638.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,539.10 : 4,880.16 = 2,638.77 : x
  2. Step 2: Convert to fraction form
    3,539.10/4,880.16 = 2,638.77/x
  3. Step 3: Cross multiply
    3,539.10x = 4,880.16 × 2,638.77
  4. Step 4: Simplify right side
    3,539.10x = 12,877,619.80
  5. Step 5: Solve for x
    x = 12,877,619.80/3,539.10
  6. Step 6: Final answer
    x = 3,638.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.