Home / 2,319.42-3,479.13-1,405.50

Finding the Fourth Proportional to 2,319.42, 3,479.13 and 1,405.50

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Solution

The fourth proportional to 2,319.42, 3,479.13 and 1,405.50 is: 2,108.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,319.42 : 3,479.13 = 1,405.50 : x
  2. Step 2: Convert to fraction form
    2,319.42/3,479.13 = 1,405.50/x
  3. Step 3: Cross multiply
    2,319.42x = 3,479.13 × 1,405.50
  4. Step 4: Simplify right side
    2,319.42x = 4,889,917.22
  5. Step 5: Solve for x
    x = 4,889,917.22/2,319.42
  6. Step 6: Final answer
    x = 2,108.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.