Home / 3,118.32-4,303.08-1,720.98

Finding the Fourth Proportional to 3,118.32, 4,303.08 and 1,720.98

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Solution

The fourth proportional to 3,118.32, 4,303.08 and 1,720.98 is: 2,374.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.32 : 4,303.08 = 1,720.98 : x
  2. Step 2: Convert to fraction form
    3,118.32/4,303.08 = 1,720.98/x
  3. Step 3: Cross multiply
    3,118.32x = 4,303.08 × 1,720.98
  4. Step 4: Simplify right side
    3,118.32x = 7,405,514.62
  5. Step 5: Solve for x
    x = 7,405,514.62/3,118.32
  6. Step 6: Final answer
    x = 2,374.84

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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.