Home / 1,605.64-2,213.92-1,178.32

Finding the Fourth Proportional to 1,605.64, 2,213.92 and 1,178.32

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Solution

The fourth proportional to 1,605.64, 2,213.92 and 1,178.32 is: 1,624.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,605.64 : 2,213.92 = 1,178.32 : x
  2. Step 2: Convert to fraction form
    1,605.64/2,213.92 = 1,178.32/x
  3. Step 3: Cross multiply
    1,605.64x = 2,213.92 × 1,178.32
  4. Step 4: Simplify right side
    1,605.64x = 2,608,710.87
  5. Step 5: Solve for x
    x = 2,608,710.87/1,605.64
  6. Step 6: Final answer
    x = 1,624.72

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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.