Home / 2,178.58-3,007.19-1,339.32

Finding the Fourth Proportional to 2,178.58, 3,007.19 and 1,339.32

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Solution

The fourth proportional to 2,178.58, 3,007.19 and 1,339.32 is: 1,848.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.58 : 3,007.19 = 1,339.32 : x
  2. Step 2: Convert to fraction form
    2,178.58/3,007.19 = 1,339.32/x
  3. Step 3: Cross multiply
    2,178.58x = 3,007.19 × 1,339.32
  4. Step 4: Simplify right side
    2,178.58x = 4,027,589.71
  5. Step 5: Solve for x
    x = 4,027,589.71/2,178.58
  6. Step 6: Final answer
    x = 1,848.72

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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.