Home / 3,215.50-4,438.01-1,818.25

Finding the Fourth Proportional to 3,215.50, 4,438.01 and 1,818.25

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Solution

The fourth proportional to 3,215.50, 4,438.01 and 1,818.25 is: 2,509.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.50 : 4,438.01 = 1,818.25 : x
  2. Step 2: Convert to fraction form
    3,215.50/4,438.01 = 1,818.25/x
  3. Step 3: Cross multiply
    3,215.50x = 4,438.01 × 1,818.25
  4. Step 4: Simplify right side
    3,215.50x = 8,069,411.68
  5. Step 5: Solve for x
    x = 8,069,411.68/3,215.50
  6. Step 6: Final answer
    x = 2,509.54

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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.