Home / 3,215.12-4,437-1,888.64

Finding the Fourth Proportional to 3,215.12, 4,437 and 1,888.64

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Solution

The fourth proportional to 3,215.12, 4,437 and 1,888.64 is: 2,606.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.12 : 4,437 = 1,888.64 : x
  2. Step 2: Convert to fraction form
    3,215.12/4,437 = 1,888.64/x
  3. Step 3: Cross multiply
    3,215.12x = 4,437 × 1,888.64
  4. Step 4: Simplify right side
    3,215.12x = 8,379,895.68
  5. Step 5: Solve for x
    x = 8,379,895.68/3,215.12
  6. Step 6: Final answer
    x = 2,606.40

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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.