Home / 3,215.64-4,437.74-1,889.72

Finding the Fourth Proportional to 3,215.64, 4,437.74 and 1,889.72

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Solution

The fourth proportional to 3,215.64, 4,437.74 and 1,889.72 is: 2,607.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.64 : 4,437.74 = 1,889.72 : x
  2. Step 2: Convert to fraction form
    3,215.64/4,437.74 = 1,889.72/x
  3. Step 3: Cross multiply
    3,215.64x = 4,437.74 × 1,889.72
  4. Step 4: Simplify right side
    3,215.64x = 8,386,086.03
  5. Step 5: Solve for x
    x = 8,386,086.03/3,215.64
  6. Step 6: Final answer
    x = 2,607.91

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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.