Home / 2,420.97-3,632.15-1,188.74

Finding the Fourth Proportional to 2,420.97, 3,632.15 and 1,188.74

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Solution

The fourth proportional to 2,420.97, 3,632.15 and 1,188.74 is: 1,783.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.97 : 3,632.15 = 1,188.74 : x
  2. Step 2: Convert to fraction form
    2,420.97/3,632.15 = 1,188.74/x
  3. Step 3: Cross multiply
    2,420.97x = 3,632.15 × 1,188.74
  4. Step 4: Simplify right side
    2,420.97x = 4,317,657.89
  5. Step 5: Solve for x
    x = 4,317,657.89/2,420.97
  6. Step 6: Final answer
    x = 1,783.44

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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.