Home / 4,218.20-6,328.36-1,909.08

Finding the Fourth Proportional to 4,218.20, 6,328.36 and 1,909.08

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Solution

The fourth proportional to 4,218.20, 6,328.36 and 1,909.08 is: 2,864.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,218.20 : 6,328.36 = 1,909.08 : x
  2. Step 2: Convert to fraction form
    4,218.20/6,328.36 = 1,909.08/x
  3. Step 3: Cross multiply
    4,218.20x = 6,328.36 × 1,909.08
  4. Step 4: Simplify right side
    4,218.20x = 12,081,345.51
  5. Step 5: Solve for x
    x = 12,081,345.51/4,218.20
  6. Step 6: Final answer
    x = 2,864.10

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