Home / 3,401.60-4,685.60-2,405.12

Finding the Fourth Proportional to 3,401.60, 4,685.60 and 2,405.12

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Solution

The fourth proportional to 3,401.60, 4,685.60 and 2,405.12 is: 3,312.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,401.60 : 4,685.60 = 2,405.12 : x
  2. Step 2: Convert to fraction form
    3,401.60/4,685.60 = 2,405.12/x
  3. Step 3: Cross multiply
    3,401.60x = 4,685.60 × 2,405.12
  4. Step 4: Simplify right side
    3,401.60x = 11,269,430.27
  5. Step 5: Solve for x
    x = 11,269,430.27/3,401.60
  6. Step 6: Final answer
    x = 3,312.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.