Home / 3,612.48-5,418.80-1,113.72

Finding the Fourth Proportional to 3,612.48, 5,418.80 and 1,113.72

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Solution

The fourth proportional to 3,612.48, 5,418.80 and 1,113.72 is: 1,670.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.48 : 5,418.80 = 1,113.72 : x
  2. Step 2: Convert to fraction form
    3,612.48/5,418.80 = 1,113.72/x
  3. Step 3: Cross multiply
    3,612.48x = 5,418.80 × 1,113.72
  4. Step 4: Simplify right side
    3,612.48x = 6,035,025.94
  5. Step 5: Solve for x
    x = 6,035,025.94/3,612.48
  6. Step 6: Final answer
    x = 1,670.60

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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.