Home / 2,421.89-3,632.85-1,188.98

Finding the Fourth Proportional to 2,421.89, 3,632.85 and 1,188.98

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Solution

The fourth proportional to 2,421.89, 3,632.85 and 1,188.98 is: 1,783.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.89 : 3,632.85 = 1,188.98 : x
  2. Step 2: Convert to fraction form
    2,421.89/3,632.85 = 1,188.98/x
  3. Step 3: Cross multiply
    2,421.89x = 3,632.85 × 1,188.98
  4. Step 4: Simplify right side
    2,421.89x = 4,319,385.99
  5. Step 5: Solve for x
    x = 4,319,385.99/2,421.89
  6. Step 6: Final answer
    x = 1,783.48

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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.