Home / 3,612.86-5,421.75-1,665.08

Finding the Fourth Proportional to 3,612.86, 5,421.75 and 1,665.08

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Solution

The fourth proportional to 3,612.86, 5,421.75 and 1,665.08 is: 2,498.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.86 : 5,421.75 = 1,665.08 : x
  2. Step 2: Convert to fraction form
    3,612.86/5,421.75 = 1,665.08/x
  3. Step 3: Cross multiply
    3,612.86x = 5,421.75 × 1,665.08
  4. Step 4: Simplify right side
    3,612.86x = 9,027,647.49
  5. Step 5: Solve for x
    x = 9,027,647.49/3,612.86
  6. Step 6: Final answer
    x = 2,498.75

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1.5x scale

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.