Home / 3,215.53-4,436.80-1,818.01

Finding the Fourth Proportional to 3,215.53, 4,436.80 and 1,818.01

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Solution

The fourth proportional to 3,215.53, 4,436.80 and 1,818.01 is: 2,508.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.53 : 4,436.80 = 1,818.01 : x
  2. Step 2: Convert to fraction form
    3,215.53/4,436.80 = 1,818.01/x
  3. Step 3: Cross multiply
    3,215.53x = 4,436.80 × 1,818.01
  4. Step 4: Simplify right side
    3,215.53x = 8,066,146.77
  5. Step 5: Solve for x
    x = 8,066,146.77/3,215.53
  6. Step 6: Final answer
    x = 2,508.50

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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.